At a time when pop was dominated by dance music and pop-metal, Guns N' Roses brought raw, ugly rock & roll crashing back into the charts. They were not nice boys; nice boys don't play rock & roll. They were ugly, misogynistic, and violent; they were also funny, vulnerable, and occasionally sensitive, as their breakthrough hit, "Sweet Child O' Mine," showed. While Slash and Izzy Stradlin ferociously spit out dueling guitar riffs worthy of Aerosmith or the Stones, Axl Rose screeched out his tales of sex, drugs, and apathy in the big city. Meanwhile, bassist Duff McKagan and drummer Steven Adler were a limber rhythm section who kept the music loose and powerful. Guns N' Roses' music was basic and gritty, with a solid hard, bluesy base; they were dark, sleazy, dirty, and honest -- everything that good hard rock and heavy metal should be. There was something refreshing about a band that could provoke everything from devotion to hatred, especially since both sides were equally right. There hadn't been a hard rock band this raw or talented in years, and they were given added weight by Rose's primal rage, the sound of confused, frustrated white trash vying for his piece of the pie. As the '80s became the '90s, there simply wasn't a more interesting band around, but owing to intra-band friction and the emergence of alternative rock, Rose's supporting cast gradually disintegrated, as he spent years in seclusion.

Guns N' Roses released their first EP in 1986, which led to a contract with Geffen; the following year, the band released its debut album, Appetite for Destruction. They started to build a following with their numerous live shows, but the album didn't start selling until almost a year later, when MTV started playing "Sweet Child O' Mine." Soon, both the album and single shot to number one, and Guns N' Roses became one of the biggest bands in the world. Their debut single, "Welcome to the Jungle," was re-released and shot into the Top Ten, and "Paradise City" followed in its footsteps. By the end of 1988, they released G N' R Lies, which paired four new, acoustic-based songs (including the Top Five hit "Patience") with their first EP. G N' R Lies' inflammatory closer, "One in a Million," sparked intense controversy, as Rose slipped into misogyny, bigotry, and pure violence; essentially, he somehow managed to distill every form of prejudice and hatred into one five-minute tune.

Guns N' Roses began work on the long-awaited follow-up to Appetite for Destruction at the end of 1990. In October of that year, the band fired Adler, claiming that his drug dependency caused him to play poorly; he was replaced by Matt Sorum from the Cult. During recording, the band added Dizzy Reed on keyboards. By the time the sessions were finished, the new album had become two new albums. After being delayed for nearly a year, the albums Use Your Illusion I and Use Your Illusion II were released in September 1991. Messy but fascinating, the albums showcased a more ambitious band; while there were still a fair number of full-throttle guitar rockers, there were stabs at Elton John-style balladry, acoustic blues, horn sections, female backup singers, ten-minute art rock epics with several different sections, and a good number of introspective, soul-searching lyrics. In short, they were now making art; amazingly, they were successful at it. The albums sold very well initially, but while they had seemed destined to set the pace for the decade to come, that turned out not to be the case at all.

Nirvana's Nevermind hit number one in early 1992, suddenly making Guns N' Roses -- with all of their pretensions, impressionistic videos, models, and rock star excesses -- seem very uncool. Rose handled the change by becoming a dictator, or at least a petty tyrant; his in-concert temper tantrums became legendary, even going so far as to incite a riot in Montreal. Stradlin left by the end of 1991, and with his departure the band lost its best songwriter; he was replaced by ex-Kills for Thrills guitarist Gilby Clarke. GNR didn't fully grasp the shift in hard rock until 1993, when they released an album of punk covers, The Spaghetti Incident?; it received some good reviews, but the band failed to capture the reckless spirit of not only the original versions, but its own Appetite for Destruction. By the middle of 1994, there were rumors flying that GNR were about to break up, since Rose wanted to pursue a new, more industrial direction and Slash wanted to stick with their blues-inflected hard rock. The band remained in limbo for several more years, and Slash resurfaced in 1995 with the side project Slash's Snakepit and an LP, It's Five O'Clock Somewhere.

Rose remained out of the spotlight, becoming a virtual recluse and doing nothing but tinkering in the studio; he also recruited various musicians -- including Dave Navarro, Tommy Stinson, and ex-Nine Inch Nails guitarist Robin Finck -- for informal jam sessions. Remaining members were infuriated by Rose's inclusion of childhood friend Paul Huge in the new sessions when both Stradlin and Clarke were excluded from rejoining the band. And a remake of the Rolling Stones' "Sympathy for the Devil" was essentially the straw that broke the camel's back, as Rose cut out some of the other members' contributions and pasted Huge over the song without consulting anyone else. By 1996, Slash was officially out of Guns N' Roses, leaving Rose the lone remaining survivor from the group's heyday; rumors continued to swirl, and still no new material was forthcoming, though Rose did re-record Appetite for Destruction with a new lineup for rehearsal purposes. The first new original GNR song in eight years, the industrial metal sludge of "Oh My God" finally appeared on the soundtrack to the 1999 Arnold Schwarzenegger film "End of Days". Soon after, Geffen issued the two-disc Live Era: '87-'93.

The year 2000 brought the addition of guitarists Robin Finck (of Nine Inch Nails) and Buckethead, and 2001 was greeted with Guns N' Roses' first live dates in nearly seven years, as the band (which consisted of Rose plus guitarists Finck and Buckethead, bassist Stinson, former Primus drummer Brian "Brain" Mantia, childhood friend and guitarist Paul Huge, and longtime GNR keyboardist Dizzy Reed) played a show on New Year's Eve 2000 in Las Vegas, playing as well at the mammoth Rock in Rio festival the following month. On New Year's Eve 2001, the band played almost the exact same set as the year before.

An appearance at MTV's 2002 "Video Music Awards" helped garner interest in the new lineup, but a rusty performance from Rose and an interview where he said his new album wasn't coming out anytime soon didn't do much to further their cause. That summer, GNR started on their first tour in almost eight years, and they managed to fulfill all of their commitments in Europe and Asia. Sadly, they caused a violent and destructive riot in Vancouver when Rose failed to show up for the first date of their North American tour. While he was up to his old shenanigans with the retooled lineup, former Stone Temple Pilots vocalist Scott Weiland, Slash, Sorum, and McKagan formed the successful Velvet Revolver in spring 2002.

And so years passed and still no new GNR album, to the point where it became one joke too many. The album was long billed as Chinese Democracy, and occasionally session recordings would leak and make their way onto Internet file-sharing networks. A fascinating article written by Jeff Leeds for The New York Times, published in March 2005, revealed how tangled and costly the making of the album had become. According to the article, titled "The Most Expensive Album Never Released," Rose began work on the album in 1994 and racked up production costs of at least $13 million dollars. Producers involved with the album at one time or another included Mike Clink, Youth, Sean Beavan, and even Roy Thomas Baker. (Curiously, Moby claimed to have been offered the job as well.) Marco Beltrami and Paul Buckmaster were allegedly brought in for orchestral arrangements, and there was a revolving door of guitarists. In 2006, the album seemed closer to release, as Rose began surfacing in public and even took his band on the road for some shows. The music industry's biggest boondoggle finally bore fruit in 2008 when Axl unveiled a record that was well over a decade in the making. While Chinese Democracy received many rave reviews, and the critical response was positive overall, the record underperformed (its almost impossible) expectations, debuting at number three on the Billboard 200 when it came out in November. A worldwide tour followed.

Stephen Thomas Erlewine & Greg Prato, Rovi

After ushering in the era of pop-metal with their 1986 blockbuster Slippery When Wet and its hit singles You Give Love a Bad Name, Wanted Dead or Alive, and Living on a Prayer, Bon Jovi wound up transcending the big-haired 80s, withstanding changes in style and sound to become one of the biggest American rock bands of their time, selling over 120 million albums worldwide, and sustaining their popularity well into the new millennium. As the times changed, so did the band's sound. They slowly peeled away the arena rock guitars of the 80s, occasionally scoring on the adult contemporary charts and sometimes singing country music without ever rejecting hard rock, a move that illustrated how they never abandoned their roots and became second only to Bruce Springsteen in defining the sound and spirit of New Jersey rock & roll.

Bon Jovi took their name from lead singer Jon Bon Jovi (born Jon Bongiovi), who spent his adolescence playing in local Jersey bands with David Bryan (born David Rashbaum). Jon's cousin, Tony Bongiovi, owned the celebrated New York recording studio the Power Station and Jon spent many hours there, working as a janitor and recording demos after hours, sometimes supported by members of the E Street Band or Aldo Nova. One of those demos, "Runaway," became a hit on local New Jersey radio and lead to the formation of Bon Jovi the band, as Jon and Bryan were supported by guitarist Dave Sabo, bassist Alec John Such, and drummer Tico Torres. Runaway spurred a major-label bidding war leading to a contract with Polygram/Mercury in 1983. Before the group entered the studio, though, Bon Jovi replaced Sabo with Richie Sambora, a working guitarist with a long résumé including a stint as a member of Message.

Bon Jovi released their eponymous debut album in 1984, generating a Top 40 hit with the original version of "Runaway." The following year, 7800° Fahrenheit was released and went gold, all serving as a prelude to the band's 1986 breakthrough, Slippery When Wet. Paul Stanley had given Jon and Richie the phone number of professional songwriter Desmond Child, and together they wrote two of the album's biggest hits in Richie's parents' basement. The trio composed 30 songs in total and auditioned them for local New Jersey and New York teenagers, basing the album's running order on their opinions. Supported by several appealing, straightforward videos that received heavy rotation on MTV, the record took off on the strength of You Give Love a Bad Name, followed quickly by Livin' on a Prayer and Wanted Dead or Alive. Those three Top Ten Hits helped propel Slippery When Wet to sales of nine million in the U.S. alone, establishing Bon Jovi as superstars in their home country. Their fame was not limited to the U.S., though, as the album also turned into a significant hit in Europe, Canada, Japan, and Australia.

Bon Jovi built upon Slippery When Wet's formula with 1988's New Jersey, which shot to number one upon its release. New Jersey was only slightly less successful than its predecessor, selling five million copies and generating two number one singles, "Bad Medicine" and "I'll Be There for You," as well as the Top Ten hits "Born to Be My Baby," "Lay Your Hands on Me," and "Living in Sin." Following the completion of an 18-month international tour, the band went on hiatus. During the time off, Jon Bon Jovi wrote the soundtrack for "Young Guns II", which was released in 1990 as the Blaze of Glory album. The record produced two hit singles -- the number one title track and the number 12 "Miracle" -- and earned several Grammy and Oscar nominations.

The following year, Bon Jovi reunited to record their fifth album, Keep the Faith, which was released in the fall of 1992. While the album didn't match the blockbuster status of its predecessors, it did produce a hit with "Bed of Roses," an adult contemporary-styled ballad that helped sustain the band's popularity. A greatest-hits album called Cross Road appeared in 1994 and yielded another Top Ten ballad, "Always." Around the same time, bassist Alec John Such left the band; Hugh McDonald, who appeared on Bon Jovi recordings stretching back as far as Runaway, became his unofficial replacement and featured prominently on the band's next album. Released in the fall of 1995, These Days turned into another U.S. Top Ten, as well as a popular European hit. After appearing in the 1996 film "Moonlight and Valentino", Jon Bon Jovi released his first official solo album, Destination Anywhere, in the summer of 1997.

During the tail-end of the '90s, the members of Bon Jovi engaged in different projects -- Sambora released a sophomore solo set called Undiscovered Soul in 1998 -- before easing back into work in 1999 via a song for EdTV, then beginning work on a full-length record. The resulting album, Crush, appeared in 2000 and constituted something of a comeback in America thanks to the smash single It's My Life, a cross-platform hit single with long legs. Thank You for Loving Me also turned into a hit, helping Crush go double platinum in the U.S. and selling eight million copies worldwide. Bon Jovi quickly followed Crush with their eighth studio effort, Bounce, which appeared in fall 2002, and supported the record with another international tour. In 2003, the band re-recorded many of its most well-known songs for the acoustic-based release This Left Feels Right, which also saw an accompanying DVD in 2004.

The ambitious outtakes and rarities box set 100,000,000 Bon Jovi Fans Can't Be Wrong arrived later that November, followed by the all-new Have a Nice Day -- the first of several albums produced by John Shanks. That album's success was aided in part by the single Who Says You Can't Go Home, featuring guest vocals from Sugarland's Jennifer Nettles, which eventually won the Grammy Award for Best Country Collaboration with Vocals -- as well as topping the charts in Japan, Australia, Europe, and Canada. The band spent the following year in the studio, putting the finishing touches on a collection of pop-infused heartland country anthems. The resulting Lost Highway, which featured duets with LeAnn Rimes and Big & Rich, arrived in the summer of 2007 and grabbed the band a healthy new country music fan base in the process. Lost Highway's cross-genre formula proved to be quite potent, securing the band its third number one album in the U.S. Bon Jovi returned to rock shortly thereafter, though, with the release of the somber, searching The Circle in 2009. One year later, Greatest Hits: The Ultimate Collection offered plenty of hits along with two new tracks, No Apologies and What Do You Got?

In the first years of the 2010s, the members of Bon Jovi pursued solo projects, the most notable being Sambora's 2012 solo album Aftermath of the Lowdown. Several months after its release, Bon Jovi returned with What About Now, their first album in four years.

Stephen Thomas Erlewine, Rovi

With their 1978 eponymous debut, Van Halen simultaneously rewrote the rules of rock guitar and hard rock in general. Guitarist Eddie Van Halen redefined what the electric guitar could do, developing a blindingly fast technique with a variety of self-taught two-handed tapping, hammer-ons, pull-offs, and effects that mimicked the sounds of machines and animals. It was wildly inventive and over the top, equaled only by vocalist David Lee Roth, who brought the role of a metal singer to near-performance art standards. Roth wasn't blessed with great technique, unlike Eddie, but he had a flair for showmanship derived as much from lounge performers as Robert Plant. Together, they made Van Halen into the most popular American rock & roll band of the late '70s and early '80s, and in the process set the template for hard rock and heavy metal for the '80s.

Throughout the '80s, it was impossible not to hear Van Halen's instrumental technique on records that ranged from the heaviest metal to soft pop. Furthermore, Roth's irony-drenched antics were copied by singers who took everything literally. One of these was Sammy Hagar, an arena rock veteran from the '70s who replaced Roth after the vocalist had a falling out with Van Halen in 1985. Hagar stayed with the band longer than Roth, helping the group remain a fixture on the top of the charts through the late '80s and early '90s. Halfway through the '90s the group's sales began to slide, just as tensions between Hagar and Eddie began to arise. As the group prepped a greatest hits album, Hagar was fired (or quit) and Roth was brought back on to sing two cuts on the compilation. He was subsequently replaced by Gary Cherone, a former member of Extreme, who lasted through one album before departing. After a half-decade hiatus, the band mounted a reunion tour with Hagar, who left in 2005 only to be replaced by Roth, with this reunion leading to a new album called A Different Kind of Truth in 2011.

Through all the upheaval over lead vocalists, Eddie Van Halen and his prodigious talent remained the core of Van Halen. The son of a Dutch bandleader, Eddie and his family moved from the Netherlands to Pasadena, California in 1962, when he was seven years old and his older brother, Alex, was nine. As their father supported the family by playing in wedding bands, Eddie and Alex continued their classical piano training. Soon, both boys were enraptured by rock & roll. Eddie learned how to play drums and Alex took up the guitar, eventually switching instruments. The brothers began a hard rock band called Mammoth and began playing around Pasadena, eventually meeting David Lee Roth. At the time, Roth, who had been raised in a wealthy Californian family, was singing in Redball Jet. Impressed by the Van Halen brothers, he joined forces with the group. Shortly afterward, bassist Michael Anthony, who was singing with Snake, became a member of Mammoth. After discovering that another band had the rights to the name Mammoth, the group decided to call themselves Van Halen in 1974, rejecting the proposed Rat Salade.

For the next three years, Van Halen played throughout Pasadena, Santa Barbara, and Los Angeles, in both clubs and hotel bars. Their repertoire covered everything from pop and rock to disco, but they eventually worked in their own original material. Within a few years, they had become the most popular local band in Los Angeles, and Eddie became well known for his groundbreaking technique. In 1977, Kiss' Gene Simmons financed a demo recording session for Van Halen after seeing them at the Starwood Club. On the strength of Simmons' recommendation, Mo Ostin and Ted Templeman signed Van Halen to Warner Bros., releasing the band's debut the following year.

Van Halen became a hit due to strong word of mouth, constant touring, and support from AOR radio. Within three months the album had gone gold, and five months later it went platinum. It would eventually sell over six million copies, thanks to the album rock staples "You Really Got Me," "Jamie's Cryin'," and "Runnin' with the Devil." Van Halen II, released in 1979, continued the band's success, as "Dance the Night Away" became their first Top 20 single. Women and Children First (1980) didn't have any charting singles, but was a success on the album charts, reaching number six. The band supported the album with their first headlining, international arena tour, and were quickly on their way to being superstars. Released in 1981, Fair Warning wasn't quite as popular as their previous records, yet it still peaked at number six. Diver Down, released in 1982, was a huge hit, spawning a number 12 cover of Roy Orbison's "(Oh) Pretty Woman" and reaching number three.

While all of their previous albums were successful, Van Halen didn't become superstars until 1984, when their album 1984 became an across-the-board smash. Released on New Year's Day, 1984 rocketed to number two on the strength of the number one single "Jump." Like many songs on the album, "Jump" was driven by Eddie's new synthesizer, and while Roth was initially reluctant to use electronics, the expansion of the group's sound was widely praised. Throughout 1984, Van Halen gained steam, as "I'll Wait" and "Panama" became Top 15 singles and "Hot for Teacher" became a radio and MTV staple.

Despite the group's breakthrough success, things were not well within the band. During their 1984 tour, each member played separate solo sets and was physically separated on the stage. Roth was unhappy with Eddie's appearance on Michael Jackson's 1983 hit "Beat It," and Eddie grew tired of the comic antics of Roth. In 1985, Roth released a solo EP, Crazy from the Heat, which spawned hit covers of "California Girls" and "Just a Gigolo/I Ain't Got Nobody." When Roth delayed the recording of Van Halen's follow-up to 1984, he was fired from the band. Most observers were taken by surprise when Sammy Hagar was named as Roth's replacement. The former lead singer of Montrose, Hagar's solo career had been sporadically successful, highlighted by such arena metal hits as "Three-Lock Box" and "I Can't Drive 55."

Though many critics suspected Hagar wouldn't be able to sustain Van Halen's remarkable success, his first album with the band, 1986's 5150, was a huge hit, reaching number one and spawning the hit singles "Why Can't This Be Love," "Dreams," and "Love Walks In." Released in 1988, OU812 was just as successful, earning stronger reviews than its predecessor and generating the hits "When It's Love" and "Finish What You Started." For Unlawful Carnal Knowledge, released in 1991, was another number one hit, partially due to the hit MTV video for "Right Now." Van Halen followed the album with their first live record, the double-album Van Halen Live: Right Here, Right Now in 1993.

By the spring 1995 release of Balance, tensions between Eddie Van Halen and Sammy Hagar had grown considerably. Eddie had recently undergone well-publicized treatment for alcoholism, and Hagar was notorious for his party-hearty ways, even writing a paean to Amsterdam's hash bars with "Amsterdam" on Balance. Furthermore, the band had become subject to criticism that it simply repeated a formula. While Balance was successful, entering the charts at number one and selling two million copies shortly after its release, it stalled quickly afterward. The band wanted to release a greatest-hits collection, but Hagar balked at the idea, escalating tensions even further. Following a skirmish in 1996 over the recording of a song for the Twister soundtrack, Eddie decided to make a change by switching singers. Van Halen began recording new material with Roth without informing Hagar, who went ballistic upon learning of the group's reunion.

According to Hagar, Eddie fired him shortly afterward; Eddie claimed Hagar quit. Roth proceeded to record two new songs for Van Halen's Best Of, Vol. 1, and once the reunion became public, the rock media reacted positively to the news; MTV began airing a welcome back commercial days after the announcement. However, the reunion was not to be. Following an appearance at the MTV Music Awards, Eddie Van Halen fired Roth from the band, claiming that he was only on board to record two new songs. Roth said that he was duped into recording the songs, believing that the reunion was permanent. Former Extreme vocalist Gary Cherone was announced as the band's new lead singer. Though the resulting Best Of, Vol. 1 was a success, Eddie's reputation as a nice guy was tarnished once the entire affair was over. Cherone's long-awaited debut with Van Halen, entitled Van Halen III, was finally released in March of 1998. Although the album debuted high on the charts, crashing in at number three, it quickly slipped down, since the reception to the album from fans, critics, and radio was mixed.

After Van Halen III proved to be the worst-selling album of Van Halen's long and illustrious career (the ensuing world tour was poorly attended as well), Cherone was dismissed from Van Halen in 1999. Immediately, rumors began to swirl once more of an impending David Lee Roth/Van Halen reunion. Things were kept hush-hush in the Van Halen camp until early 2001, when David Lee Roth went public on his website with an update, confirming that he had recorded several new songs with the band but hadn't heard back from them since the previous summer.

Only a few days after Roth's news, Eddie Van Halen admitted to the public that he was battling cancer, but was told by his doctors that chances were good for a complete recovery. In the summer of 2001, Eddie told "MTV News" that the band's remaining members had penned a total of three albums' worth of new material and that they were still unsure of who their next singer would be. Months later, the band parted ways with Warner Bros., its label since 1979. The bandmembers blamed the label for promoting younger bands, while also admitting that they had not yet found Cherone's replacement and were no longer considering Roth.

The next three years found various members tending to situations both personal and professional. Eddie and longtime wife Valerie Bertinelli separated, Michael Anthony began making regular appearances with Sammy Hagar's Warboritas, and in a surprise move, David Lee Roth and Hagar hit the road together for the popular "Heavyweight Champs of Rock & Roll Tour". In 2004, the band announced that Hagar would return to the fold for an American tour in support of a new greatest-hits collection, The Best of Both Worlds. The shows were undeniably successful, but tensions were high, and Hagar and Anthony returned to the Warboritas the following year. In 2007, Van Halen were inducted into the Rock & Roll Hall of Fame and rumors of a reunion tour with Roth began to circulate again. Those rumors were confirmed on August 17th when the group announced legitimate dates, along with a controversial lineup change that replaced Michael Anthony with Eddie's son Wolfgang on bass. The tour kicked off in September and went on to gross over $93 million, the most successful tour in the band's history.

Riding this great success, Van Halen decided to head into the studio to cut their first album since 1998's III. Working with producer John Shanks, the band recorded the album in 2011, then launched their full-scale comeback in the early days of 2012, performing a showcase concert at Cafe Wha? on January 5, with the single "Tattoo" arriving five days later. The full-length album, A Different Kind of Truth, followed in February 2012.

Stephen Thomas Erlewine & Greg Prato, Rovi

In many ways, Def Leppard were the definitive hard rock band of the '80s. There were many bands that rocked harder (and were more dangerous) than the Sheffield-based quintet, but few others captured the spirit of the times quite as well. Emerging in the late '70s as part of the New Wave of British Heavy Metal, Def Leppard actually owed more to the glam rock and metal of the early '70s, as their sound was equal parts T. Rex, Mott the Hoople, Queen, and Led Zeppelin. By toning down their heavy riffs and emphasizing melody, Def Leppard were poised for crossover success by 1983's Pyromania, and skillfully used the fledgling MTV network to their advantage. The musicians were already blessed with photogenic good looks, but they also crafted a series of innovative, exciting videos that made them into stars. They intended to follow Pyromania quickly but were derailed when their drummer lost an arm in a car accident, the first of many problems that plagued the group's career. They managed to pull through such tragedies, and even expanded their large audience with 1987's blockbuster Hysteria. As the '90s began, mainstream hard rock shifted away from their signature pop-metal and toward edgier, louder bands, yet they maintained a sizable audience into the late '90s and were one of only a handful of '80s metal groups to survive the decade more or less intact.

Def Leppard had their origins in a Sheffield-based group that teenagers Rick Savage (bass) and Pete Willis (guitar) formed in 1977. Vocalist Joe Elliott, a fanatic follower of Mott the Hoople and T. Rex, joined the band several months later, bringing the name Deaf Leopard with him. After a spelling change, the trio, augmented by a now-forgotten drummer, began playing local Sheffield pubs, and within a year the band had added guitarist Steve Clark to the lineup, as well as a new drummer. Later in 1978, they recorded their debut EP, Getcha Rocks Off, and released it on their own label, Bludgeon Riffola. The EP became a word-of-mouth success, earning airplay on the BBC. The group members were still in their teens.

Following the release of Getcha Rocks Off, Rick Allen was added as the band's permanent drummer, and Def Leppard quickly became the subject of the British music weeklies. They soon signed with AC/DC's manager, Peter Mensch, who helped them secure a contract with Mercury Records. On Through the Night, the band's full-length debut, was released in 1980 and instantly became a hit in the U.K., also earning significant airplay in the U.S., where it reached number 51 on the charts. Over the course of the year, Def Leppard relentlessly toured Britain and America, playing their own shows while also opening concerts for Ozzy Osbourne, Sammy Hagar, and Judas Priest. High 'n' Dry followed in 1981 and became the group's first platinum album in the U.S., thanks to MTV's strong rotation of "Bringin' on the Heartbreak." MTV would be vital to the band's success in the '80s.

As the band recorded the follow-up to High 'n' Dry with producer Mutt Lange, Pete Willis was fired from the band for alcoholism, and Phil Collen, a former guitarist for Girl, was hired to replace him. The resulting album, 1983's Pyromania, became an unexpected blockbuster, due not only to Def Leppard's skillful, melodic metal, but also to MTV's relentless airing of "Photograph" and "Rock of Ages." Pyromania went on to sell ten million copies, establishing Def Leppard as one of the most popular bands in the world. Despite their success, they were about to enter a trying time for their career. Following an extensive international tour, the group reentered the studio to record the follow-up, but producer Lange was unavailable, so they began sessions with Jim Steinman, the man responsible for Meat Loaf's Bat Out of Hell. The pairing turned out to be ill-advised, so the bandmembers turned to their former engineer, Nigel Green. One month into recording, Allen lost his left arm in a New Year's Eve car accident. The arm was reattached, but it had to be amputated once an infection set in.

Def Leppard's future looked cloudy without a drummer, but by the spring of 1985 -- just a few months after his accident -- Allen began learning to play a custom-made electronic kit assembled for him by Simmons. The band soon resumed recording, and within a few months Lange was back on board, having judged all the existing tapes inferior and ordered the band to begin work all over again. Recording sessions continued throughout 1986, and that summer, the group returned to the stage for the European Monsters of Rock tour. Def Leppard finally completed their fourth album, now titled Hysteria, early in 1987. The record was released that spring to lukewarm reviews, with many critics claiming that the album compromised Leppard's metal roots for sweet pop flourishes. Accordingly, Hysteria was slow out of the starting gates -- "Women," the first single, failed to really take hold -- but the release of "Animal" helped the album gather steam. The song became Def Leppard's first Top 40 hit in the U.K., but more importantly, it launched a string of six straight Top 20 hits in the U.S., which also included "Hysteria," "Pour Some Sugar on Me," "Love Bites," "Armageddon It," and "Rocket," the latter of which arrived in 1989, a full two years after the release of Hysteria. During those two years, Def Leppard's presence was unavoidable -- they were the kings of high-school metal, ruling the pop charts and MTV, and teenagers and bands alike replicated their teased hair and ripped jeans, even when the grimy hard rock of Guns N' Roses took hold in 1988.

Hysteria proved to be the peak of Leppard's popularity, yet their follow-up remained eagerly awaited in the early '90s, as the band took a break from the road and set to work on a new record. During the recording process, however, Steve Clark died from an overdose of alcohol and drugs. Clark had historically battled with alcohol, and following the Hysteria heyday, his bandmates forced him to take a sabbatical. Although he did enter rehab, Clark's habits continued, and his abuse was so crippling that Collen began recording the majority of the band's guitar leads. Following Clark's death, Def Leppard resolved to finish their forthcoming album as a quartet, releasing Adrenalize in the spring of 1992. Adrenalize was greeted with mixed reviews, and even though the album debuted at number one and contained several successful singles, including the Top 20 hits "Let's Get Rocked" and "Have You Ever Needed Someone So Bad," the record was a commercial disappointment in the wake of Pyromania and Hysteria. After its release, the group added former Whitesnake guitarist Vivian Campbell to the lineup, thus resuming Def Leppard's two-guitar attack.

In 1993, Def Leppard released the rarities collection Retro Active, which yielded another Top 20 hit with the acoustic ballad "Two Steps Behind." Two years later, the group released the greatest-hits collection Vault while preparing for its sixth album. Slang arrived in the spring of 1996, and while it proved more adventurous than its predecessor, it was greeted with indifference, indicating that Leppard's heyday had indeed passed and they were now simply a very popular cult band. Undaunted, Leppard soldiered on, returning to their patented pop-metal sound for Euphoria, which was released in June of 1999. Despite the success of "Promises," the record failed to produce any additional hits, resulting in a return to adult pop balladry on 2002's X. The two-disc Rock of Ages: The Definitive Collection arrived in 2005, followed in 2006 by Yeah!, a strong collection of covers. In 2008, the guys released their ninth studio album, Songs from the Sparkle Lounge, which debuted at number five and was supported by a lucrative summer tour. Material from that tour helped make up the bulk of Mirror Ball: Live & More, a three-disc live album containing a full concert, three new studio recordings, and DVD footage.

Stephen Thomas Erlewine, Rovi

Mötley Crüe were one of the most influential hair metal bands of the '80s, boasting a striking visual presence and hedonistic reputation rivaled only by Guns N' Roses. By combining Alice Cooper's shock rock with the bluesy, metallic stomp of the New York Dolls and Aerosmith, they helped establish hair metal as a commercial genre, sending their first five albums to platinum status in the process. Such success was at least partially due to Mötley Crüe's reputation as a riotous pack of rabble-rousers, replete with drug addictions, near-death experiences, groupie encounters, and celebrity girlfriends. Of course, that same self-indulgence nearly derailed the band, forcing the musicians to embrace sobriety during the creation of their most successful album to date, 1989's Dr. Feelgood. Like most hair metal bands, Mötley Crüe's album sales waned during the 1990s, as the popularity of grunge overshadowed most of the music that immediately prefaced it. Nevertheless, the band soldiered through the decade with modest success, releasing two gold-selling albums along the way. The new millennium brought similar luck, as Mötley Crüe established themselves as a fashionable touring act (with Crüe Fest becoming the summer's highest-grossing festival in 2008) while continuing to release new material.

Formed in January 1981, Mötley Crüe were originally the pet project of bassist Nikki Sixx (born Frank Ferrana), vocalist/guitarist Greg Leon, and drummer Tommy Lee (born Thomas Lee Bass). Leon was a veteran of the Hollywood scene, having replaced Randy Rhoads in Quiet Riot two years prior. He butted heads with the strong-willed Sixx, however, resulting in his departure from the lineup several months later. Local guitarist Bob "Mick Mars" Deal joined in his place, bringing the moniker "Mottley Krue" with him. After altering the name and adding a pair of umlauts (allegedly in tribute to German beer), the trio began efforts to recruit Vincent Neil Wharton, vocalist for the L.A.-based band Rock Candy. Neil initially refused the advances, only joining the band after his Rock Candy cohorts announced their decision to transform their group into a new wave act. With Vince Neil now on board, Mötley Crüe became a cult favorite on the L.A. circuit, infamously known for such theatrics as setting Sixx's pants on fire midsong.

The band soon secured management with Allan Coffman, who financed recording sessions for a debut album. Initially released in November 1981 by Lethur Records -- a small, independent label launched by Coffman and the band -- Too Fast for Love sold a surprising 20,000 copies. It also prompted a Canadian tour, where the musicians made headlines by wearing their spike-laden stage attire onto the plane, carrying suitcases of pornographic material through airport security, and fielding death threats from incensed fans in Edmonton. Such exposure only served to fuel Mötley Crüe's sensationalist appeal, generating the sort of shocked press coverage that the band desired.

Back at home, Elektra Records had become impressed by the band's popularity in local venues, prompting the label to sign Mötley Crüe before releasing a new, remastered version of Too Fast for Love. Following the band's return to California, Elektra also released the sophomore effort Shout at the Devil in 1983. The video for "Looks That Kill" became an MTV hit, broadcasting the group's glammed-up theatrics to an audience unfamiliar with Mötley Crüe's popularity on the club circuit, and the record went platinum as a result. Shout at the Devil sold an additional million copies in 1984, but the party was brought to a temporary standstill when Vince Neil crashed his car on December 8, killing passenger Nicholas "Razzle" Dingley of Hanoi Rocks. The other victims emerged with broken bones and brain damage, while a relatively unscathed Neil was found guilty of vehicular manslaughter and driving under the influence. He was ultimately incarcerated for 15 days in 1986, in addition to performing community service and paying a large cash settlement. By the time Neil was sentenced, however, the band's newest record, Theatre of Pain, had already enjoyed a lengthy stay on the charts, cementing the band's mainstream status and producing Mötley Crüe's first Top 40 hit with a cover of Brownsville Station's "Smokin' in the Boys' Room." Neil's stint in jail was brief, and the band was free to continue its decadent reign.

Under the management of Doug Thaler and Doc McGhee, the latter of whom also managed Bon Jovi, Mötley Crüe's popularity expanded throughout the latter half of the '80s. "Home Sweet Home," a power ballad from Theatre of Pain, yielded another popular music video, while a 44-minute home video cassette entitled Uncensored was issued in 1986 to multi-platinum sales. Meanwhile, Lee married actress Heather Locklear, and the band returned to the studio to record a fourth album, Girls, Girls, Girls. Released during the band's substance-addled heyday in 1987, the album debuted at number two, with the raunchy title track becoming Mötley Crüe's second Top 40 hit. The group quickly embarked on a headlining tour, but the European dates were canceled when Sixx suffered a near-fatal heroin overdose. He was pronounced legally dead en route to the hospital, only to be revived by two shots of adrenaline to the heart. Upon returning home, Sixx immediately shot up once again. Shocked, Thaler and McGhee urged their clients to enter a drug rehabilitation program, and Mötley Crüe remained out of the spotlight while the bandmates cleaned up their act.

They returned in 1989 -- clean and sober this time -- with the release of Dr. Feelgood, a muscled album that became Mötley Crüe's first release to top the Billboard charts. Meanwhile, the title track became the band's first Top Ten hit, and a string of additional singles -- "Kickstart My Heart" (inspired by Sixx's brush with death), "Don't Go Away Mad (Just Go Away)," and "Without You" -- made Dr. Feelgood the most successful Crüe album to date. After another worldwide tour, the compilation album Decade of Decadence arrived in 1991, propelled to multi-platinum status by a new version of "Home Sweet Home" that became the band's final Top 40 hit.

After creating their own record label, Mötley Records, the bandmates signed a renewed contract with Elektra for $25 million. The music industry had begun to devote most of its attention to grunge music, however, and the pressure to keep pace with changing trends took its toll on the band's camaraderie. In 1992, sessions for Mötley Crüe's next album turned ugly, leading to the dismissal (or departure, depending on the source) of Neil, who was replaced by the Scream's John Corabi. The revised band issued Mötley Crüe in 1994, which peaked at number seven in the U.S. and eventually went gold. Such an attempt to embrace a new, grungier sound proved to be a commercial disappointment, however, as did the band's supporting tour. Corabi was fired in 1997 at the label's behest, and Neil returned to the lineup for the release of Generation Swine. The subject of a heavy marketing campaign, Generation Swine debuted at number four, although it failed to generate any significant singles. Meanwhile, Corabi resurfaced alongside former Kiss guitarist Bruce Kulick in the group Union.

Shortly after the release of Greatest Hits in 1998, Tommy Lee was arrested for spousal abuse against Pamela Anderson. He spent most of the year in jail, effectively killing any momentum generated by the gold-selling status of Greatest Hits and Generation Swine. Meanwhile, the group's contract with Elektra fell apart, prompting Mötley Records to switch its affiliation to the Beyond label. The band acquired the rights to its back catalog in the process.

After numerous bitter encounters with Neil, Tommy Lee left the band in 1999 to form Methods of Mayhem, which released a self-titled debut album later that year. He was replaced by former Ozzy Osbourne drummer Randy Castillo, and the revamped lineup celebrated its acquisition of the Crüe catalog by issuing remastered editions of every studio album, as well as the rarities collection Supersonic and Demonic Relics. A collection of new material, New Tattoo, appeared in the summer of 2000 to a lukewarm reception, and Castillo became stricken with an undisclosed illness on the eve of the requisite tour. While he recuperated at home, the band temporarily enlisted Hole's drummer (and lifelong Crüe fan), Samantha Maloney, to handle percussion duties.

In May 2001, the band issued a best-selling, tell-all biography entitled The Dirt. During the downtime that followed its release, Neil launched a brief solo tour of U.S. clubs and Sixx wrote material for other artists, including Tantric, Meat Loaf, Faith Hill, Tim McGraw, and James Michael. Sadly, Castillo succumbed to cancer during the following spring, prompting the band to continue its hiatus. Although Sixx speculated publicly about the possibility of a reunion tour, Tommy Lee quickly rebutted such rumors, claiming that his relationship with Vince Neil was simply too poor for any sort of reconciliation. Controversy surrounded the band again as former producer Tom Werman sued for unpaid royalties, Neil's former wife Heidi Mark publicly accused him of physical abuse, and Neil was kicked off a nationally syndicated radio show for being too drunk to maintain an interview.

Rumors of a reunion continued to swirl throughout the following two years, even as Mötley Crüe's members remained loyal to their individual projects. Both Tommy Lee and Vince Neil participated in celebrity TV shows -- Lee as the focus of an NBC series that featured the drummer attending college classes, and Neil in the first season of The Surreal Life -- while Sixx toured and released an album with his new band, Brides of Destruction. In late 2004, however, the four original members announced a full-scale reunion tour for the following year, marking their first outing since the late '90s. The tour coincided with the February release of Mötley Crüe's double-disc greatest-hits collection, Red, White & Crüe, which went platinum within six months of its release. The reunion tour was further celebrated by the release of a concert album, Carnival of Sins Live, in 2006, while a record of new material, Saints of Los Angeles, arrived in 2008. In keeping with their recent dedication to the road, the bandmates subsequently unveiled plans for Crüe Fest, a summer package tour that netted over $40 million during its inaugural year.

Andrew Leahey, Rovi

Rooted in the campy theatrics of Alice Cooper and the sleazy hard rock of glam rockers the New York Dolls, Kiss became a favorite of American teenagers in the '70s. Most kids were infatuated with the look of Kiss, not their music. Decked out in outrageously flamboyant costumes and makeup, the band fashioned a captivating stage show featuring dry ice, smoke bombs, elaborate lighting, blood spitting, and fire breathing that captured the imaginations of thousands of kids. But Kiss' music shouldn't be dismissed -- it was a commercially potent mix of anthemic, fist-pounding hard rock driven by sleek hooks and ballads powered by loud guitars, cloying melodies, and sweeping strings. It was a sound that laid the groundwork for both arena rock and the pop-metal that dominated rock in the late '80s.

Kiss was the brainchild of Gene Simmons (bass, vocals) and Paul Stanley (rhythm guitar, vocals), former members of the New York-based hard rock band Wicked Lester; the duo brought in drummer Peter Criss through his ad in "Rolling Stone", while guitarist Ace Frehley responded to an advertisement in "The Village Voice". Even at their first Manhattan concert in 1973, the group's approach was theatrical, and Flipside producer Bill Aucoin offered the band a management deal after the show. Two weeks later, the band was signed to Neil Bogart's fledgling record label, Casablanca. Kiss released their self-titled debut in February of 1974; it peaked at number 87 on the U.S. charts. By April of 1975, the group had released three albums and had been touring America constantly, building up a sizable fan base.

Culled from those numerous concerts, Alive! (released in the fall of 1975) made the band rock & roll superstars; it climbed into the Top Ten and its accompanying single, "Rock 'N' Roll All Nite," made it to number 12. Their follow-up, Destroyer, was released in March of 1976 and became the group's first platinum album; it also featured their first Top Ten single, Peter Criss' power ballad "Beth." Kiss mania was in full swing; thousands of pieces of merchandise hit the marketplace (including pinball machines, makeup and masks, and board games), and the group had two comic books released by Marvel as well as a live-action TV movie, Kiss Meet the Phantom of the Park. A 1977 Gallup poll named Kiss the most popular band in America. The group was never seen in public without wearing their makeup, and their popularity was growing by leaps and bounds; the membership of the Kiss Army, the band's fan club, was now in the six figures.

Even such enormous popularity had its limits, and the band reached them in 1978, when all four members released solo albums on the same day in October. Simmons' record was the most successful, reaching number 22 on the charts, yet all of them made it into the Top 50. Dynasty, released in 1979, continued their streak of platinum albums, yet it was their last record with the original lineup -- Criss left in 1980. Kiss Unmasked, released in the summer of 1980, was recorded with session drummer Anton Fig; Criss' true replacement, Eric Carr, joined the band in time for their 1980 world tour. Kiss Unmasked was their first record since Destroyer to fail to go platinum, and 1981's Music from the Elder, their first album recorded with Carr, didn't even go gold -- it couldn't even climb past number 75 on the charts. Ace Frehley left the band after its release; he was replaced by Vinnie Vincent in 1982. Vincent's first album with the group, 1982's Creatures of the Night, fared better than Music from the Elder, yet it couldn't make it past number 45 on the charts.

Sensing it was time for a change, Kiss dispensed with their makeup for 1983's Lick It Up. The publicity worked, as the album became their first platinum record in four years. Animalize, released the following year, was just as successful, and the group essentially recaptured their niche. Vincent left after Animalize and was replaced by Mark St. John, although St. John was soon taken ill with Reiter's Syndrome and left the band. Bruce Kulick became Kiss' new lead guitarist in 1984. For the rest of the decade, Kiss turned out a series of best-selling albums, culminating in the early 1990 hit ballad "Forever," which was their biggest single since "Beth." Kiss was scheduled to record a new album with their old producer, Bob Ezrin, in 1990 when Eric Carr became severely ill with cancer; he died in November of 1991 at the age of 41. Kiss replaced him with Eric Singer and recorded Revenge (1992), their first album since 1989; it was a Top Ten hit and went gold. Kiss followed it with the release of Alive III the following year; it performed respectably, but was not up to the standards of their two previous live records.

In 1996, the original lineup of Kiss -- featuring Simmons, Stanley, Frehley, and Criss -- reunited to perform an international tour, complete with their notorious makeup and special effects. The tour was one of the most successful of 1996, and in 1998 the reunited group issued Psycho Circus. While the ensuing tour in support of Psycho Circus was a success, sales of Kiss' reunion album weren't as stellar as anticipated. Reminiscent of the band's late-'70s unfocused period, few tracks on Psycho Circus featured all four members playing together (most tracks were supplemented with session musicians), as the band seemed more interested in flooding the marketplace with merchandise yet again instead of making the music their top priority. With rumors running rampant that the Psycho Circus Tour would be their last, the quartet announced in the spring of 2000 that they would be launching a U.S. farewell tour in the summer, which became one of the year's top concert draws. But on the eve of a Japanese and Australian tour in early 2001, Peter Criss suddenly left the band once again, supposedly discontent with his salary. Taking his place was previous Kiss drummer Eric Singer, who in a controversial move among some longtime fans, donned Criss' cat-man makeup (since Simmons and Stanley own both Frehley and Criss' makeup designs, there was no threat of a lawsuit) as the farewell tour continued.

With the band scheduled to call it a day supposedly by late 2001, a mammoth career-encompassing box set was set for later in the year, while the summer saw perhaps the most over-the-top piece of Kiss merchandise yet -- the "Kiss Kasket." The group was relatively quiet through the rest of the year, but 2002 started with a bang as Gene Simmons turned in an entertaining and controversial interview on NPR where he criticized the organization and berated host Terry Gross with sexual comments and condescending answers. He was promoting his autobiography at the time, which also caused dissent in the Kiss camp because of the inflammatory remarks made toward Ace Frehley. Frehley was quite angry at the situation, leading to his no-show at an "American Bandstand" anniversary show. (His place was taken by a wig-wearing Tommy Thayer, but no one was fooled and the band looked especially awful while pretending to play their instruments during the pre-recorded track.) The appearance was an embarrassment for the group and for their fans, but Simmons was quick to dismiss the performance as another in a long series of money-oriented decisions. The band kept touring the globe with no new album in stores, but in 2008 they returned to the studio, re-recorded their hits, and released Jigoku-Retsuden aka KISSology or Kiss Klassics. The release was exclusive to Japan until a year later when it became a bonus disc for the band's first studio album in 11 years, Sonic Boom. Produced by Paul Stanley and Greg Collins, the album was exclusively distributed in North America by the Wal-Mart chain of stores. In 2012, the band's twentieth studio album, Monster, surfaced, rewriting the cowbell-heavy party rock of their '70s heyday and adding some nods to the sinister metal of 1992's Revenge.

Stephen Thomas Erlewine & Greg Prato, Rovi

In a decade fueled by party anthems and power ballads, Poison enjoyed a great amount of popularity, with only Bon Jovi and Def Leppard outselling them. While the group had a long string of pop-metal hits, they soon became just as renowned for their stage show, and continued to be a major attraction long after the '80s came to a close (bringing the commercial downfall of pop-metal with it). Meanwhile, frontman Bret Michaels reinvented himself as a reality TV star in 2007, and his involvement in several TV shows -- particularly "Rock of Love", "Celebrity Apprentice", and "Life as I Know It" -- helped maintain the band's popularity in concert.

Formerly known as Paris, Poison was formed in 1984 by Bret Michaels, bassist Bobby Dall, and drummer Rikki Rockett. After leaving their hometown of Harrisburg, PA, and resettling in L.A., the boys began holding auditions for a fourth member. Guitarist C.C. Deville got the gig, famously beating out future Guns N' Roses bandmate Slash in the process. With their lineup intact, Poison embraced a glammy, androgynous image and began playing shows in L.A., becoming masters of self-promotion and D.I.Y. advertising in the process. The hard work won them a contract with Enigma Records in 1986, and they released their first album, Look What the Cat Dragged In, that summer. The record spawned a pair of Top 40 hits, "Talk Dirty to Me" and "I Won't Forget You," and sold over two-million copies within a year of its release.

The band was already quite popular by the end of 1987, but 1988's Open Up & Say...Ahhh! proved to be Poison's commercial breakthrough, due to the massive hits "Fallen Angel," "Nothin' But a Good Time," and "Every Rose Has Its Thorn" (which became the band's first chart-topping single). After a prosperous tour alongside David Lee Roth, the group returned to the studio to record Flesh and Blood in 1990. The album, which included the number three hit "Unskinny Bop" and the number four ballad "Something to Believe In," was another multi-platinum success, but it also signaled the end of Poison's glory days. While touring in support of Flesh and Blood (as documented on the double-disc concert album Swallow This Live), the band began falling apart, and an infamous appearance on MTV showed Deville performing "Talk Dirty to Me" with his guitar unplugged. The band broke into a brawl backstage after the disastrous performance.

Shortly after the release of Swallow This Live, Poison fired Deville due to his increasing addiction to drugs and alcohol. His replacement, 21 year-old Richie Kotzen, made his commercial debut with the band on 1993's Native Tongue. Despite some strong reviews and a hit single, "Stand," the album proved to be a commercial disappointment. Kotzen was fired during the subsequent tour, having reportedly struck up an illicit relationship with Rikki Rockett's fiancé, and solo artist/session guitarist Blues Saraceno became Poison's third guitarist. The band recorded its fifth studio album, Crack a Smile, for an intended release in 1996, but the record was shelved and replaced with the Greatest Hits: 1986-1996 disc instead. Toward the end of that year, Saraceno left and Deville returned to the band, a move that resulted in a successful reunion tour during the summer of 1999. The Crack a Smile sessions were finally released the following spring, followed by Power to the People, which paired five new songs with 12 live tracks from the band's comeback tour. However, another tour was cut short by an accident that left Dall with serious back surgery.

Following Dall's lengthy recovery, the band stepped into the studio and recorded Hollyweird, which was released in the summer of 2002. The following tour was promoted as a nostalgic experience and was funded by VH1, laying the brickwork for a lucrative relationship between the band and the television channel. Deville would later appear in the network's sixth season of "The Surreal Life", while Michaels was awarded his own dating show, "Rock of Love with Bret Michaels". Hollyweird's reception was lukewarm at best, and Poison spent some time out of the spotlight while Michaels and Rockett released solo albums. They reconvened in 2006, celebrating their 20th anniversary with a nationwide tour and another greatest-hits album. Propelled by Michaels' new status as a reality TV star, The Best of Poison: 20 Years of Rock debuted inside the Billboard Top 20, a feat the band hadn't accomplished since Native Tongue. The following year brought similar luck, with the band's seventh studio effort -- a covers album titled Poison'd! -- moving over 20,000 units during its first week.

Barry Weber & Andrew Leahey, Rovi

Though many bands have succeeded in earning the hatred of parents and media worldwide throughout the past few decades, arguably only such acts as Alice Cooper, Judas Priest, and Marilyn Manson have tied the controversial record of Ozzy Osbourne. The former Black Sabbath frontman has been highly criticized over his career, mostly due to rumors denouncing him as a psychopath and Satanist. Despite his reputation, no one could deny that Osbourne has had an immeasurable effect on heavy metal. While he doesn't possess a great voice, he makes up for it with his good ear and dramatic flair. As a showman, his instincts are nearly as impeccable; his live shows have been overwrought spectacles of gore and glitz that have endeared him to adolescents around the world. Indeed, Osbourne has managed to establish himself as an international superstar, capable of selling millions of records with each album and packing arenas across the globe, capturing new fans with each record.

John Michael Osbourne began his professional career in the late '60s, when he teamed up with guitarist Tony Iommi, bassist Geezer Butler, and drummer Bill Ward to form Black Sabbath. The band, made unique by their slow, gloomy melodies and themes, released their self-titled album in 1970 and went on to release classic platinum records such as Paranoid and Master of Reality throughout the rest of the decade. After the 1978 album Never Say Die, Osbourne was fired from Black Sabbath, which led him to form his own solo project. With his new manager and wife, Sharon, Osbourne formed his own band, the Blizzard of Ozz, with guitarist Randy Rhoads, bassist Bob Daisley, and drummer Lee Kerslake. The group's self-titled first album was released in September 1980 in the U.K. and early 1981 in the U.S. Blizzard of Ozz had some of the same ingredients of Black Sabbath: the lyrics focused on the occult and the guitars were loud and heavy, yet the band was more technically proficient and capable of pulling off variations on standard metal formulas. Featuring the hit singles "Crazy Train" and "Mr. Crowley," Blizzard of Ozz reached number seven on the U.K. charts; it peaked at number 21 in the U.S., continuing to sell for over two years and becoming a huge success. Kerslake and Daisley were replaced with Tommy Aldridge and Rudy Sarzo shortly before the subsequent November release of Diary of a Madman. This album, which included the drug ode "Flying High Again," charted at number 16 in the U.S. and became another huge seller. As the Diary tour went underway, sales for the album continued to improve as those of Black Sabbath waned.

Osbourne had no trouble in attaining mass audiences, and his career seemed to have peaked. However, controversy soon erupted when he was accused of animal cruelty: during one performance, a bat was thrown on-stage by a fan and Osbourne bit its head off while supposedly thinking that it was fake. The show was canceled when he had to be rushed to the hospital for a rabies vaccination. Not long afterward, Rhoads was killed in a bizarre plane accident, bringing the band's success to a screeching halt. Osbourne fell into a massive depression shortly after losing his best friend, and plans for his upcoming live album were soon changed. Instead of material recorded with Rhoads, 1982's Speak of the Devil featured live recordings of classic Black Sabbath material and was recorded with guitarist Brad Gillis. Osbourne was freed from his contract with Jet Records and showed up drunk at an Epic Records meeting with two doves, one of which he freed and the other of which he killed in the same manner as the bat; Osbourne was signed to the label. Jake E. Lee became Osbourne's new guitarist for the 1984 studio effort Bark at the Moon. While it didn't match the consistency of Blizzard of Ozz or Diary of a Madman, the record was equally successful, pushing the singer to embark on a tour with glam metal stalwarts Mötley Crüe. Although Bark at the Moon opened up to rave reviews, 1986's Ultimate Sin received rather harsh criticism. The album, although containing the hit single "Shot in the Dark," was regarded as Osbourne's worst studio effort by numerous critics, who claimed it was redundant and uninteresting; nonetheless, the album was another smash hit.

Also in 1986, Osbourne was accused of encouraging suicide among listeners via use of subliminal messages in his Blizzard of Ozz song "Suicide Solution," a song that he claimed was written in relation to the effects of alcohol abuse. Although the case was eventually dismissed, Osbourne once again earned a feared reputation. He pulled up his profile in 1987 with Tribute, a live album recorded in 1981 that was dedicated to the memory of Randy Rhoads. Lee soon left the band and was replaced with Zakk Wylde for No Rest for the Wicked, which would be released in 1988. The record proved to be one of his strongest yet, highlighted by "Miracle Man," in which Osbourne ridiculed evangelist (and longtime foe) Jimmy Swaggart. Just Say Ozzy, a live EP taken from the subsequent tour, was released in 1990. After recording a new studio album in 1991, Osbourne found himself without the usual enthusiasm to perform, due to his increasing age and his desire to spend more time with his family. When No More Tears was released in the fall, it was confirmed that the following tour would be Osbourne's last before retirement. Following the tour, a live double album, Live & Loud, was released in 1993 to commemorate Osbourne's career, and it was now assumed that the singer's glory days were over.

However, the retirement was not to be -- Osbourne resurfaced in 1995 with Ozzmosis, which, despite mixed reviews, sold three million copies within a year after its release. After the subsequent tour proved one of the best-selling of the summer, Osbourne created Ozzfest, a tour package that featured himself along with many other metal bands. While there were only two performances in 1996, a live album was nonetheless released, simply titled The Ozzfest. 1997's tour package included such metal acts as Pantera, Marilyn Manson, and a Black Sabbath reunion from which only Bill Ward was absent. With the exception of Sarah McLachlan's Lilith Fair, Ozzfest 1997 was the most successful tour of the year, and Osbourne released a compilation album, The Ozzman Cometh, in November. Shortly afterward, Osbourne united the entire original lineup of Black Sabbath to record the live album Reunion, which was released in 1998. He also found time to duet alongside rapper Busta Rhymes for a remake of the Sabbath classic "Iron Man," retitled "This Means War," which was included on Rhymes' 1998 release Extinction Level Event (The Final World Front).

Sabbath continued to tour well into 1999, as they again headlined the year's Ozzfest, which was billed as their supposed final tour. The same year, a grisly Ozzy action figure was shipped out to toy stores -- complete with tiny decapitated bats. Osbourne also finally began work on the follow-up to his lackluster 1995 solo release Ozzmosis, which saw him joined by returning guitarist Wylde, plus former Faith No More drummer Mike Bordin and former Suicidal Tendencies/Infectious Grooves bassist Robert Trujillo. 2001 was greeted with the news that not only was Black Sabbath reuniting once again for the summer's edition of Ozzfest, but that the quartet was going to enter the recording studio in the fall with producer Rick Rubin to work on the original lineup's first all-new album since 1978's Never Say Die. Unfortunately, Epic Records caught word of Osbourne's plans and stopped both a post-Ozzfest tour with Disturbed and the album itself until he finished his solo record. Ozzy fans were given the double-disc Ozzfest: Second Stage Live to tide them over in the meantime -- the collection included tracks from most of the bands that participated in the 2000 festival, as well as tracks from Ozzfest's inaugural 1996 lineup.

Finally, the new solo album Down to Earth appeared in the fall of 2001, followed by a few successful rock radio singles and a huge Christmas tour with co-headliner Rob Zombie. Meanwhile, inspired by an episode of MTV's Cribs starring his family, Osbourne and the network's producers took a chance on creating a reality show based around the infamous singer. Following his family around the house for several months at the end of 2001, the end result was The Osbournes, one of the most successful shows in the history of the network. The show, which was equal parts documentary and sitcom, reinvented Osbourne as a befuddled father with a razor-sharp wit and a loving family. It also proved to also be a critical success, and Osbourne found himself invited to a White House dinner to promote his animal protection activism, something that only came to light after an episode of the show dedicated to the family's numerous pets. A string of compilations followed Down to Earth, including 2005's Under Cover, a collection of cover songs. Ozzy returned to the studio the following year to begin work on a new studio album. The resulting Black Rain arrived in May 2007, followed by his tenth studio album, Scream, in 2010.

Barry Weber & Greg Prato, Rovi

Lynyrd Skynyrd was the definitive Southern rock band, fusing the overdriven power of blues-rock with a rebellious Southern image and a hard rock swagger. Skynyrd never relied on the jazzy improvisations of the Allman Brothers. Instead, they were a hard-living, hard-driving rock & roll band -- they may have jammed endlessly on-stage, but their music remained firmly entrenched in blues, rock, and country. For many, Lynyrd Skynyrd's redneck image tended to obscure the songwriting skills of their leader, Ronnie Van Zant. Throughout the band's early records, Van Zant demonstrated a knack for lyrical detail and a down-to-earth honesty that had more in common with country than rock & roll. During the height of Skynyrd's popularity in the mid-'70s, however, Van Zant's talents were overshadowed by the group's gritty, greasy blues-rock. Sadly, it wasn't until he was killed in a tragic plane crash in 1977 along with two other bandmembers that many listeners began to realize his talents. Skynyrd split up after the plane crash, but they reunited a decade later, becoming a popular concert act during the early '90s.

While in high school in Jacksonville, FL, Ronnie Van Zant (vocals), Allen Collins (guitar), and Gary Rossington (guitar) formed My Backyard. Within a few months, the group added bassist Leon Wilkeson and keyboardist Billy Powell, and changed their name to Lynyrd Skynyrd, a mocking tribute to their gym teacher Leonard Skinner, who was notorious for punishing students with long hair. With drummer Bob Burns, Lynyrd Skynyrd began playing throughout the South. For the first few years, the group had little success, but producer Al Kooper signed the band to MCA after seeing them play at an Atlanta club called Funocchio's in 1972. Kooper produced the group's 1973 debut, Pronounced Leh-Nerd Skin-Nerd, which was recorded after former Strawberry Alarm Clock guitarist Ed King joined the band. The group became notorious for their triple-guitar attack, which was showcased on "Free Bird," a tribute to the recently deceased Duane Allman. "Free Bird" earned Lynyrd Skynyrd their first national exposure and it became one of the staples of album rock radio, still receiving airplay decades after its release.

"Free Bird" and an opening slot on the Who's 1973 "Quadrophenia" tour gave Lynyrd Skynyrd a devoted following, which helped their second album, 1974's Second Helping, become its breakthrough hit. Featuring the hit single "Sweet Home Alabama" -- a response to Neil Young's "Southern Man" -- Second Helping reached number 12 and went multi-platinum. At the end of the year, Artimus Pyle replaced drummer Burns and King left the band shortly afterward. The new sextet released Nuthin' Fancy in 1975, and it became the band's first Top Ten hit. The record was followed by the Tom Dowd-produced Gimme Back My Bullets in 1976, which failed to match the success of its two predecessors. However, the band retained their following through constant touring, which was documented on the double live album One More from the Road. Released in late 1976, the album featured the band's new guitarist, Steve Gaines, and a trio of female backup singers, and it became Skynyrd's second Top Ten album.

Lynyrd Skynyrd released their sixth album, Street Survivors, on October 17, 1977. Three days later, a privately chartered plane carrying the band between shows in Greenville, SC, and Baton Rouge, LA, crashed outside of Gillsburg, MS. Ronnie Van Zant, Steve Gaines, and his sister Cassie, one of the group's backing vocalists, died in the crash; the remaining members were injured. (The cause of the crash was either fuel shortage or a fault with the plane's mechanics.) The cover for Street Survivors had pictured the band surrounded in flames; after the crash, the cover was changed. In the wake of the tragedy, the album became one of the band's biggest hits. Lynyrd Skynyrd broke up after the crash, releasing a collection of early demos called Skynyrd's First and...Last in 1978; it had been scheduled for release before the crash. The double-album compilation Gold & Platinum was released in 1980.

Later in 1980, Rossington and Collins formed a new band -- naturally named Rossington Collins Band -- that featured four surviving members. Two years later, Pyle formed the Artimus Pyle Band. Collins suffered a car crash in 1986 that killed his girlfriend and left him paralyzed; four years later, he died of respiratory failure. In 1987, Rossington, Powell, King, and Wilkeson reunited Lynyrd Skynyrd, adding vocalist Johnny Van Zant and guitarist Randall Hall. The band embarked on a reunion tour, which was captured on the 1988 double live album Southern by the Grace of God/Lynyrd Skynyrd Tribute Tour -- 1987. The re-formed Skynyrd began recording in 1991, and for the remainder of the decade, the band toured frequently, putting out albums occasionally. The reunited Skynyrd frequently switched drummers, but it had little effect on their sound.

During the '90s, Lynyrd Skynyrd were made honorary colonels in the Alabama State Militia, due to their classic rock staple "Sweet Home Alabama." During the mid-'90s, Van Zant, Rossington, Wilkeson, and Powell regrouped by adding two Southern rock veterans to Skynyrd's guitar stable: former Blackfoot frontman Rickey Medlocke and ex-Outlaws Hughie Thomasson. With ex-Damn Yankee Michael Cartellone bringing stability to the drum chair, the reconstituted band signed to CMC International for the 1997 album Twenty. This lineup went on to release Lyve from Steeltown in 1998, followed a year later by Edge of Forever. The seasonal effort Christmas Time Again was released in fall 2000. Although Wilkeson died one year later, Lynyrd Skynyrd regrouped and recorded Vicious Cycle for a 2003 release. The DVD/CD Lyve: The Vicious Cycle Tour followed a year later, 2006 saw the release of Face to Face, and 2007 brought Paper Sleeve Box and Lyve from Steel Town. But death continued to haunt the band, and the lineup continued to change, as much from attrition as anything else. Wilkeson, Skynyrd's bassist since 1972, died in 2001 and was replaced by Ean Evans that same year (Evans in turn died in 2009). Thomasson left the band to reform his band Outlaws in 2005, dying two years later in 2007. His spot in Skynyrd was taken by Mark "Sparky" Matejka, formerly of Hot Apple Pie, in 2006. Original keyboardist Powell died at the age of 56 at his home near Jacksonville, Fl in 2009. That year also saw the release of a new studio album, God + Guns, on Roadrunner Records. Live From Freedom Hall was released on the same label in 2010. A new studio album, Last of a Dyin' Breed, produced by Bob Marlette, recorded at Blackbird Studio in Nashville, and featuring a new bass player, Johnny Colt (formerly a bassist for the Black Crowes), appeared in 2012.

Stephen Thomas Erlewine & Steve Leggett, Rovi

Along with Kiss' Ace Frehley, Aerosmith's Joe Perry was responsible for inspiring thousands of teenagers to pick up guitars and start rocking & rolling in the 1970s and beyond. Born September 10, 1950 in Lawrence, MA, Perry got his first taste of rock & roll at the ripe old age of six, when neighbors turned him on to such early rock nuggets as "Rock Around the Clock," "Tutti Frutti," etc. Infatuated by the likes of the Beatles and the Rolling Stones in the '60s, Perry picked up the guitar during his teenage years, and started jamming along with such British blues-rockers as the Yardbirds (Having a Rave Up with the Yardbirds) and John Mayall (Bluesbreakers), which would serve as the basis for his tough & rough blues licks that would later put Aerosmith over the top. Getting his chops together by playing with such bands as Flash, Just Us, Plastic Glass, and the Jam Band (during which he hooked up with future Aerosmith bassist Tom Hamilton), Perry crossed paths with New York City native Steven Tyler (then named Steven Tallarico) in 1969, when each of their bands would play at Sunapee, N.H.'s The Barn. Shortly thereafter, Aerosmith was formed -- consisting of Perry on guitar, Tyler on vocals, Hamilton on bass, Joey Kramer on drums, and Ray Tabano on second guitar (later replaced by Brad Whitford). Combining the blues grit of the Stones and the Yardbirds with the heavy riffing of Led Zeppelin, the band would issue their first album on Columbia in 1973, and by the late-'70s, would be one of the world's biggest rock bands (on the strength of sold-out tours and such classic albums as 1975's Toys in the Attic and 76's Rocks). But Aerosmith's first reign at the top didn't last long. Hard drugs eventually weakened the band's camaraderie and blurred their original musical vision -- leading to spats between Perry and Tyler. Frustrated with band, Perry left during the recording of 1979's Night in the Ruts, soon after forming his own band, the Joe Perry Project. The original lineup (consisting of Ralph Mormon on vocals, David Hull on bass, and Ronnie Stewart on drums, in addition to Perry), issued an inspired, woefully overlooked debut, Let the Music Do the Talking, one year later. Although the new band was promising, old habits were hard to break, as drugs ruined the band. Still, Perry soldiered on (facing bankruptcy at the time), issuing two more so-so albums with a revolving door of bandmembers. With Aerosmith's career sagging as well, Perry patched up his differences with Tyler, and reunited the classic Aero lineup by 1984. Drug abuse still ran rampant, resulting in their unfocused debut for Geffen, 1985's Done with Mirrors. But a surprise hit with rappers RUN-DMC (a remake of Aerosmith's "Walk This Way") and the Aero-members finally kicking drugs and drink for good, led to an immediate resurgence in their popularity. By the late '80s, Aerosmith was on top of the rock world again, where Perry and co remained, issuing such hit albums as Permanent Vacation, Pump, and Get a Grip.

Greg Prato, Rovi

This sturdy American blues-rock trio from Texas consists of Billy Gibbons (guitar), Dusty Hill (bass), and Frank Beard (drums). They were formed in 1970 in and around Houston from rival bands the Moving Sidewalks (Gibbons) and American Blues (Hill and Beard). Their first two albums reflected the strong blues roots and Texas humor of the band. Their third album (Tres Hombres) gained them national attention with the hit "La Grange," a signature riff tune to this day, based on John Lee Hooker's "Boogie Chillen." Their success continued unabated throughout the '70s, culminating with the year-and-a-half-long Worldwide Texas Tour.

Exhausted from the overwhelming workload, they took a three-year break, then switched labels and returned to form with Deguello and El Loco, both harbingers of what was to come. By their next album, Eliminator, and its worldwide smash follow-up, Afterburner, they had successfully harnessed the potential of synthesizers to their patented grungy blues groove, giving their material a more contemporary edge while retaining their patented Texas style. Now sporting long beards, golf hats, and boiler suits, they met the emerging video age head-on, reducing their "message" to simple iconography. Becoming even more popular in the long run, they moved with the times while simultaneously bucking every trend that crossed their path. As genuine roots musicians, they have few peers; Gibbons is one of America's finest blues guitarists working in the arena rock idiom -- both influenced by the originators of the form and British blues-rock guitarists like Peter Green -- while Hill and Beard provide the ultimate rhythm section support.

The only rock & roll group that's out there with its original members still aboard after three decades (an anniversary celebrated on 1999's XXX), ZZ Top play music that is always instantly recognizable, eminently powerful, profoundly soulful, and 100-percent American in derivation. They have continued to support the blues through various means, perhaps most visibly when they were given a piece of wood from Muddy Waters' shack in Clarksdale, MS. The group members had it made into a guitar, dubbed the "Muddywood," then sent it out on tour to raise money for the Delta Blues Museum. ZZ Top's support and link to the blues remains as rock solid as the music they play. A concert CD and DVD, Live from Texas, recorded in Dallas in 2007 and featuring a still vital band, were both released in 2008. The Rick Rubin and Gibbons-produced La Futura, the band's 15th studio album, and the group's first new studio outing since 2003's Mescalero, appeared in 2012.

Cub Koda, Rovi

Few bands embodied the pure excess of the '70s like Queen. Embracing the exaggerated pomp of prog rock and heavy metal, as well as vaudevillian music hall, the British quartet delved deeply into camp and bombast, creating a huge, mock-operatic sound with layered guitars and overdubbed vocals. Queen's music was a bizarre yet highly accessible fusion of the macho and the fey. For years, their albums boasted the motto "no synthesizers were used on this record," signaling their allegiance with the legions of post-Led Zeppelin hard rock bands. But vocalist Freddie Mercury brought an extravagant sense of camp to Queen, pushing them toward kitschy humor and pseudo-classical arrangements, as epitomized on their best-known song, "Bohemian Rhapsody." Mercury, it must be said, was a flamboyant bisexual who managed to keep his sexuality in the closet until his death from AIDS in 1991. Through his legendary theatrical performances, Queen became one of the most popular bands in the world in the mid-'70s; in England, they remained second only to the Beatles in popularity and collectibility in the '90s. Despite their enormous popularity, Queen were never taken seriously by rock critics -- an infamous Rolling Stone review labeled their 1979 album Jazz as "fascist." In spite of such harsh criticism, the band's popularity rarely waned; even in the late '80s, the group retained a fanatical following except in America. In the States, their popularity peaked in the early '80s, just as they finished nearly a decade's worth of extraordinarily popular records. And while those records were never praised, they sold in enormous numbers, and traces of Queen's music could be heard in several generations of hard rock and metal bands in the next two decades, from Metallica to Smashing Pumpkins.

The origins of Queen lay in the hard rock psychedelic group Smile, which guitarist Brian May and drummer Roger Taylor joined in 1967. Following the departure of Smile's lead vocalist, Tim Staffell, in 1971, May and Taylor formed a group with Freddie Mercury, the former lead singer for Wreckage. Within a few months, bassist John Deacon joined them, and they began rehearsing. Over the next two years, as all four members completed college, they simply rehearsed, playing just a handful of gigs. By 1973, they had begun to concentrate on their career, releasing their debut album, Queen, that year and setting out on their first tour. Queen was more or less a straight metal album and failed to receive much acclaim, but Queen II became an unexpected British breakthrough early in 1974. Before its release, the band played "Top of the Pops", performing "Seven Seas of Rhye." Both the song and the performance were smash successes, and the single rocketed into the Top Ten, setting the stage for Queen II to reach number five. Following its release, the group embarked on its first American tour, supporting Mott the Hoople. On the strength of their campily dramatic performances, the album climbed to number 43 in the States.

Queen released their third album, Sheer Heart Attack, before the end of 1974. The music hall meets Zeppelin "Killer Queen" climbed to number two on the U.K. charts, taking the album to number two as well. Sheer Heart Attack made some inroads in America as well, setting the stage for the breakthrough of 1975's A Night at the Opera. Queen labored long and hard over the record; according to many reports, it was the most expensive rock record ever made at the time of its release. The first single from the record, "Bohemian Rhapsody," became Queen's signature song, and with its bombastic, mock-operatic structure punctuated by heavy metal riffing, it encapsulates their music. It also is the symbol for their musical excesses -- the song took three weeks to record, and there were so many vocal overdubs on the record that it was possible to see through the tape at certain points. To support "Bohemian Rhapsody," Queen shot one of the first conceptual music videos, and the gamble paid off as the single spent nine weeks at number one in the England, breaking the record for the longest run at number one. The song and A Night at the Opera were equally successful in America, as the album climbed into the Top Ten and quickly went platinum.

Following A Night at the Opera, Queen were established as superstars, and they quickly took advantage of all their status had to offer. Their parties and indulgence quickly became legend in the rock world, yet they continued to work at a rapid rate. In the summer of 1976, they performed a free concert at London's Hyde Park that broke attendance records, and they released the hit single "Somebody to Love" a few months later. It was followed by A Day at the Races, which was essentially a scaled-down version of A Night at the Opera that reached number one in the U.K. and number five in the U.S. They continued to pile up hit singles in both Britain and America over the next five years, as each of their albums went into the Top Ten, always going gold and usually platinum in the process. Because Queen embraced such mass success and adoration, they were scorned by the rock press, especially when they came to represent all of the worst tendencies of the old guard in the wake of punk. Nevertheless, the public continued to buy Queen records. Featuring the Top Five double-A-sided single "We Are the Champions"/"We Will Rock You," News of the World became a Top Ten hit in 1977. The following year, Jazz nearly replicated that success, with the single "Fat Bottomed Girls"/"Bicycle Race" becoming an international hit despite the massive bad publicity surrounding their media stunt of staging a nude female bicycle race.

Queen were at the height of their popularity as they entered the '80s, releasing The Game, their most diverse album to date, in 1980. On the strength of two number one singles -- the campy rockabilly "Crazy Little Thing Called Love" and the disco-fied "Another One Bites the Dust" -- The Game became the group's first American number one album. However, the bottom fell out of the group's popularity, particularly in the U.S., shortly afterward. Their largely instrumental soundtrack to "Flash Gordon" was coldly received later in 1980. With the help of David Bowie, Queen were able to successfully compete with new wave with the 1981 hit single "Under Pressure" -- their first U.K. number one since "Bohemian Rhapsody" -- which was included both on their 1981 Greatest Hits and 1982's Hot Space. Instead of proving the group's vitality, "Under Pressure" was a last gasp. Hot Space was only a moderate hit, and the more rock-oriented The Works (1984) also was a minor hit, with only "Radio Ga Ga" receiving much attention. Shortly afterward, they left Elektra and signed with Capitol.

Faced with their decreased popularity in the U.S. and waning popularity in Britain, Queen began touring foreign markets, cultivating a large, dedicated fan base in Latin America, Asia, and Africa, continents that most rock groups ignored. In 1985, they returned to popularity in Britain in the wake of their showstopping performance at Live Aid. The following year, they released A Kind of Magic to strong European sales, but they failed to make headway in the States. The same fate befell 1989's The Miracle, yet 1991's Innuendo was greeted more favorably, going gold and peaking at number 30 in the U.S. Nevertheless, it still was a far bigger success in Europe, entering the U.K. charts at number one.

By 1991, Queen had drastically scaled back their activity, causing many rumors to circulate about Freddie Mercury's health. On November 23, he issued a statement confirming that he was stricken with AIDS; he died the next day. The following spring, the remaining members of Queen held a memorial concert at Wembley Stadium that was broadcast to an international audience of more than one billion. Featuring such guest artists as David Bowie, Elton John, Annie Lennox, Def Leppard, and Guns N' Roses, the concert raised millions for the Mercury Phoenix Trust, which was established for AIDS awareness. The concert coincided with a revival of interest in "Bohemian Rhapsody," which climbed to number two in the U.S. and number one in the U.K. in the wake of its appearance in the Mike Myers comedy "Wayne's World".

Following Mercury's death, the remaining members of Queen were fairly quiet. Brian May released his second solo album, Back to the Light, in 1993, ten years after the release of his first record. Roger Taylor cut a few records with the Cross, which he had been playing with since 1987, while Deacon essentially retired. The three reunited in 1994 to record backing tapes for vocal tracks Mercury recorded on his deathbed. The resulting album, Made in Heaven, was released in 1995 to mixed reviews and strong sales, particularly in Europe. Crown Jewels, a box set repackaging their first eight LPs, followed in 1998. Archival live recordings, DVDs, and compilations kept appearing through the new millennium. The Queen name was revived in 2005, but this time with "+ Paul Rodgers" appended to it. Rodgers, the former lead singer of Free and Bad Company, joined Brian May and Roger Taylor (John Deacon remained retired) for several live shows, one of which was documented on 2005's Return of the Champions, a double-disc release issued by the Hollywood label. International touring continued, as did a new studio album featuring Rodgers' vocals. Released under the "Queen + Paul Rodgers" tag, The Cosmos Rocks appeared in September 2008, followed by an American release one month later. Reception was decidedly mixed.

Stephen Thomas Erlewine, Rovi

Originally, there was a band called Alice Cooper led by a singer named Vincent Damon Furnier. Under his direction, Alice Cooper pioneered a grandly theatrical and violent brand of heavy metal that was designed to shock. Drawing equally from horror movies, vaudeville, heavy metal, and garage rock, the group created a stage show that featured electric chairs, guillotines, fake blood, and huge boa constrictors, all coordinated by the heavily made-up Furnier. By that time, Furnier had adopted the name for his androgynous on-stage personality. While the visuals were extremely important to the group's impact, the band's music was nearly as distinctive. Driven by raw, simple riffs and melodies that derived from '60s guitar pop as well as show tunes, it was rock & roll at its most basic and catchy, even when the band ventured into psychedelia and art rock. After the original group broke up and Furnier began a solo career as Alice Cooper, his actual music lost most of its theatrical flourishes, becoming straightforward heavy metal, yet his stage show retained all of the trademark props that made him the king of shock rock.

Furnier formed his first group, the Earwigs, as an Arizona teenager in the early '60s. Changing the band's name to the Spiders in 1965, the group was eventually called the Nazz (not to be confused with Todd Rundgren's band of the same name). The Spiders and the Nazz both released local singles that were moderately popular. In 1968, after discovering there was another band with the same name, the group changed its name to Alice Cooper. According to band legend, the name came to Furnier during a Ouija board session, where he was told he was the reincarnation of a 17th century witch of the same name. Comprised of vocalist Furnier -- who would soon begin calling himself Alice Cooper -- guitarist Mike Bruce, guitarist Glen Buxton, bassist Dennis Dunaway, and drummer Neal Smith, the group moved to California in 1968. There, the group met Shep Gordon, who became their manager, and Frank Zappa, who signed Alice Cooper to his Straight Records imprint.

Alice Cooper released their first album, Pretties for You, in 1969. Easy Action followed early in 1970, yet it failed to chart. The group's reputation in Los Angeles was slowly shrinking, so the band moved to Furnier's hometown of Detroit. For the next year, the group refined their bizarre stage show. Late in 1970, the group's contract was transferred to Straight's distributor Warner Bros., and they began recording their third album with producer Bob Ezrin. With Ezrin's assistance, Alice Cooper developed their classic heavy metal crunch on 1971's Love It to Death, which featured the number 21 hit single "Eighteen"; the album peaked at number 35 and went gold. The success enabled the group to develop a more impressive, elaborate live show, which made them highly popular concert attractions across the U.S. and eventually the U.K. Killer, released late in 1971, was another gold album.

Released in the summer of 1972, School's Out was Alice Cooper's breakthrough record, peaking at number two and selling over a million copies. The title song became a Top Ten hit in the U.S. and a number one single in the U.K. Billion Dollar Babies, released the following year, was the group's biggest hit, reaching number one in both America and Britain; the album's first single, "No More Mr. Nice Guy," became a Top Ten hit in Britain, peaking at number 25 in the U.S. Muscle of Love appeared late in 1973, yet it failed to capitalize on the success of Billion Dollar Babies. After Muscle of Love, Furnier and the rest of Alice Cooper parted ways to pursue other projects. Having officially changed his name to Alice Cooper, Furnier embarked on a similarly theatrical solo career; the rest of the band released one unsuccessful album under the name Billion Dollar Babies, while Mike Bruce and Neal Smith both recorded solo albums that were never issued. In the fall of 1974, a compilation of Alice Cooper's five Warner albums, entitled Alice Cooper's Greatest Hits, became a Top Ten hit.

For his first solo album, Welcome to My Nightmare, Cooper hired Lou Reed's backing band from Rock 'N' Roll Animal -- guitarists Dick Wagner and Steve Hunter, bassist Prakash John, keyboardist Joseph Chrowski, and drummer Penti Glan -- as his supporting group. Released in the spring of 1975, the record was similar to his previous work and it became a Top Ten hit in America, launching the hit acoustic ballad "Only Women Bleed." Its success put an end to any idea of reconvening Alice Cooper the band. Its follow-up, 1976's Alice Cooper Goes to Hell, was another hit, going gold in the U.S. After Alice Cooper Goes to Hell, Cooper's career began to slip, partially due to changing trends and partially due to his alcoholism. Cooper entered rehabilitation in 1978, writing an album about his treatment called From the Inside (1978) with Bernie Taupin, Elton John's lyricist. During the early '80s, Cooper continued to release albums and tour, yet he was no longer as popular as he was during his early-'70s heyday.

Cooper made a successful comeback in the late '80s, sparked by his appearances in horror films and a series of pop-metal bands that paid musical homage to his classic early records and concerts. Constrictor, released in 1986, began his comeback, but it was 1989's Trash that returned Cooper to the spotlight. Produced by the proven hitmaker Desmond Child, Trash featured guest appearances by Jon Bon Jovi, Richie Sambora, and most of Aerosmith; the record became a Top Ten hit in Britain and peaked at number 20 in the U.S., going platinum. "Poison," a midtempo rocker featured on the album, became Cooper's first Top Ten single since 1977. After the release of Trash, he continued to star in the occasional film, tour, and record, although he wasn't able to retain the audience recaptured with Trash. Still, 1991's Hey Stoopid and 1994's The Last Temptation were generally solid, professional efforts that helped Cooper settle into a comfortable cult status without damaging the critical goodwill surrounding his '70s output. After a live album, 1997's Fistful of Alice, Cooper returned on the smaller Spitfire label in 2000 with Brutal Planet and Dragontown a year later. The Eyes of Alice Cooper appeared in 2003 and found Alice and company playing a more stripped-down brand of near-garage rock. Dirty Diamonds from 2005 was nearly as raw and hit the streets around the same time Alice premiered his syndicated radio show, "Nights with Alice Cooper". Three years later he returned with Along Came a Spider, a concept album that told the story of a spider-obsessed serial killer. In 2010, he released the live album Theatre of Death, along with a download-only EP of redone Cooper classics titled Alice Does Alice. 2011's Welcome 2 My Nightmare, a sequel to his 1975, conceptual classic of the same name (minus the 2), was recorded with longtime co-conspirator Bob Ezrin, and featured 14 brand new cuts that spanned multiple genres and relied on the talents of a host of previous members of the Alice Cooper band (including Steve Hunter), as well as a guest spot from pop superstar Ke$ha.

Stephen Thomas Erlewine, Rovi

After recording two solo albums, former Deep Purple vocalist David Coverdale formed Whitesnake around 1977. In the glut of hard rock and heavy metal bands of the late '70s, their first albums got somewhat lost in the shuffle, although they were fairly popular in Europe and Japan. During 1982, Coverdale took some time off so he could take care of his sick daughter. When he re-emerged with a new version of Whitesnake in 1984, the band sounded revitalized and energetic. Slide It In may have relied on Led Zeppelin's and Deep Purple's old tricks, but the band had a knack for writing hooks; the record became their first platinum album. Three years later, Whitesnake released an eponymous album (titled 1987 in Europe) that was even better. Portions of the album were blatantly derivative -- "Still of the Night" was a dead ringer for early Zeppelin -- but the group could write powerful, heavy rockers like "Here I Go Again" that were driven as much by melody as riffs, as well as hit power ballads like "Is This Love." Whitesnake was an enormous international success, selling over six million copies in the U.S. alone.

Before they recorded their follow-up, 1989's Slip of the Tongue, Coverdale again assembled a completely new version of the band, featuring guitar virtuoso Steve Vai. Although the record went platinum, it was a considerable disappointment after the across-the-board success of Whitesnake. Coverdale put Whitesnake on hiatus after that album. In 1993, he released a collaboration with former Led Zeppelin guitarist Jimmy Page that was surprisingly lackluster. The following year, Whitesnake issued a greatest-hits album in the U.S. and Canada focusing solely on material from their final three albums (as well as containing a few unreleased tracks).

In 1997, Coverdale resurrected Whitesnake (guitarist Adrian Vandenberg was the only remaining member of the group's latter-day lineup), issuing Restless Heart the same year. Surprisingly, the album wasn't even issued in the United States. On the ensuing tour, Coverdale and Vandenberg performed an "unplugged" show in Japan that was recorded and issued the following year under the title Starkers in Tokyo. By the late '90s, however, Coverdale once again put Whitesnake on hold, as he concentrated on recording his first solo album in nearly 22 years. Coverdale's Into the Light was issued in September 2000, featuring journeyman guitarist Earl Slick. After a lengthy hiatus that saw the release of countless "greatest-hits" and "live" collections, the band returned in 2008 with the impressive Good to Be Bad. Coverdale and Whitesnake toured the album throughout Europe and Japan. The band returned to the recording studio in 2010 with new members bassist Michael Devin (formerly of Lynch Mob) and drummer Brian Tichy, who appeared alongside guitarists Doug Aldrich and Reb Beach, and guest keyboardist Timothy Drury (as well as Coverdale's son Jasper on backing vocals on various tracks). The band's 11th album, Forevermore, was preceded by the issue of the single, "Love Will Set You Free," and released in the spring of 2011.

Stephen Thomas Erlewine & Greg Prato, Rovi

Formed in 1973, the British hard rock outfit Bad Company was a supergroup comprised of ex-King Crimson bassist Boz Burrell, former Mott the Hoople guitarist Mick Ralphs, and singer Paul Rodgers and drummer Simon Kirke, both previous members of Free. Powered by Rodgers' muscular vocals and Ralphs' blues-based guitar work, Bad Company was the first group signed to Led Zeppelin's Swan Song vanity label. Bad Company's eponymous 1974 debut was an international hit, topping the U.S. album charts and scoring with the number one single "Can't Get Enough of Your Love."

Straight Shooter, issued the following year, was another major success, notching the hit "Feel Like Makin' Love," while 1976's Run With the Pack was Bad Company's third consecutive million-selling record. After 1977's Burnin' Sky, Bad Company recorded 1979's Desolation Angels, which embellished the group's sound with synthesizers and strings; a three-year hiatus followed before the release of Rough Diamonds, the group's final LP in its original incarnation.

In 1986, Ralphs and Kirke resurrected the Bad Company name, enlisting former Ted Nugent vocalist Brian Howe to replace Rodgers. The reconfigured unit's debut, Fame & Fortune, was a commercial failure, but 1988's Dangerous Age became a minor hit. Released in 1990, Holy Water fared even better, as the power ballad "If You Needed Somebody" became a Top 20 success. Here Comes Trouble, issued in 1992, achieved platinum status, and earned another Top 40 hit with "How About That." On their 20th anniversary, Bad Company expanded into a quintet with the addition of bassist Rick Wills and rhythm guitarist Dave Colwell, and released the live retrospective The Best of Bad Company Live...What You Hear Is What You Get.

Two more LPs -- 1995's The Company of Strangers and the next year's Stories Told and Untold -- followed, and in 1998 the original lineup of Rodgers, Ralphs, Kirke, and Burrell reunited to record a handful of new tracks that surfaced alongside past material early the following year on The Original Bad Company Anthology. A reunion tour followed that spring.

Jason Ankeny, Rovi

Led Zeppelin was the definitive heavy metal band. It wasn't just their crushingly loud interpretation of the blues -- it was how they incorporated mythology, mysticism, and a variety of other genres (most notably world music and British folk) -- into their sound. Led Zeppelin had mystique. They rarely gave interviews, since the music press detested the band. Consequently, the only connection the audience had with the band was through the records and the concerts. More than any other band, Led Zeppelin established the concept of album-oriented rock, refusing to release popular songs from their albums as singles. In doing so, they established the dominant format for heavy metal, as well as the genre's actual sound.

Led Zeppelin formed out of the ashes of the Yardbirds. Jimmy Page had joined the band in its final days, playing a pivotal role on their final album, 1967's Little Games, which also featured string arrangements from John Paul Jones. During 1967, the Yardbirds were fairly inactive. While the Yardbirds decided their future, Page returned to session work in 1967. In the spring of 1968, he played on Jones' arrangement of Donovan's "Hurdy Gurdy Man." During the sessions, Jones requested to be part of any future project Page would develop. Page would have to assemble a band sooner than he had planned. In the summer of 1968, the Yardbirds' Keith Relf and James McCarty left the band, leaving Page and bassist Chris Dreja with the rights to the name, as well as the obligation of fulfilling an upcoming fall tour. Page set out to find a replacement vocalist and drummer. Initially, he wanted to enlist singer Terry Reid and Procol Harum's drummer B.J. Wilson, but neither musician was able to join the group. Reid suggested that Page contact Robert Plant, who was singing with a band called Hobbstweedle.

After hearing him sing, Page asked Plant to join the band in August of 1968, the same month Chris Dreja dropped out of the new project. Following Dreja's departure, John Paul Jones joined the group as its bassist. Plant recommended that Page hire John Bonham, the drummer for Plant's old band, the Band of Joy. Bonham had to be persuaded to join the group, as he was being courted by other artists who offered the drummer considerably more money. By September, Bonham agreed to join the band. Performing under the name the New Yardbirds, the band fulfilled the Yardbirds' previously booked engagements in late September 1968. The following month, they recorded their debut album in just under 30 hours. Also in October, the group switched its name to Led Zeppelin. The band secured a contract with Atlantic Records in the United States before the end of the year. Early in 1969, Led Zeppelin set out on their first American tour, which helped set the stage for the January release of their eponymous debut album. Two months after its release, Led Zeppelin had climbed into the U.S. Top Ten. Throughout 1969, the band toured relentlessly, playing dates in America and England. While they were on the road, they recorded their second album, Led Zeppelin II, which was released in October of 1969.

Like its predecessor, Led Zeppelin II was an immediate hit, topping the American charts two months after its release and spending seven weeks at number one. The album helped establish Led Zeppelin as an international concert attraction, and for the next year, the group continued to tour relentlessly. Led Zeppelin's sound began to deepen with Led Zeppelin III. Released in October of 1970, the album featured an overt British folk influence. The group's infatuation with folk and mythology would reach a fruition on the group's untitled fourth album, which was released in November of 1971. Led Zeppelin IV was the band's most musically diverse effort to date, featuring everything from the crunching rock of "Black Dog" to the folk of "The Battle of Evermore," as well as "Stairway to Heaven," which found the bridge between the two genres. "Stairway to Heaven" was an immediate radio hit, eventually becoming the most played song in the history of album-oriented radio; the song was never released as a single. Despite the fact that the album never reached number one in America, Led Zeppelin IV was their biggest album ever, selling well over 16 million copies over the next two and a half decades.

Led Zeppelin did tour to support both Led Zeppelin III and Led Zeppelin IV, but they played fewer shows than they did on their previous tours. Instead, they concentrated on only playing larger venues. After completing their 1972 tour, the band retreated from the spotlight and recorded their fifth album. Released in the spring of 1973, Houses of the Holy continued the band's musical experimentation, featuring touches of funk and reggae among their trademark rock and folk. The success of Houses of the Holy set the stage for a record-breaking American tour. Throughout their 1973 tour, Led Zeppelin broke box-office records -- most of which were previously held by the Beatles -- across America. The group's concert at Madison Square Garden in July was filmed for use in the feature film "The Song Remains the Same", which was released three years later. After their 1973 tour, Led Zeppelin spent a quiet year during 1974, releasing no new material and performing no concerts. They did, however, establish their own record label, Swan Song, which released all of Led Zeppelin's subsequent albums, as well as records by Dave Edmunds, Bad Company, the Pretty Things, and several others. Physical Graffiti, a double album released in February of 1975, was the band's first release on Swan Song. The album was an immediate success, topping the charts in both America and England. Led Zeppelin launched a large American tour in 1975, but it came to a halt when Robert Plant and his wife suffered a serious car crash while vacationing in Greece. The tour was canceled and Plant spent the rest of the year recuperating from the accident.

Led Zeppelin returned to action in the spring of 1976 with Presence. Although the album debuted at number one in both America and England, the reviews for the album were lukewarm, as was the reception to the live concert film "The Song Remains the Same", which appeared in the fall of 1976. The band finally returned to tour America in the spring of 1977. A couple of months into the tour, Plant's six-year-old son Karac died of a stomach infection. Led Zeppelin immediately canceled the tour and offered no word whether or not it would be rescheduled, causing widespread speculation about the band's future. For a while, it did appear that Led Zeppelin were finished. Robert Plant spent the latter half of 1977 and the better part of 1978 in seclusion. The group didn't begin work on a new album until late in the summer of 1978, when they began recording at ABBA's Polar studios in Sweden. A year later, the band played a short European tour, performing in Switzerland, Germany, Holland, Belgium, and Austria. In August of 1979, Led Zeppelin played two large concerts at Knebworth; the shows would be their last English performances.

In Through the Out Door, the band's much-delayed eighth studio album, was finally released in September of 1979. The album entered the charts at number one in both America and England. In May of 1980, Led Zeppelin embarked on their final European tour. In September, Led Zeppelin began rehearsing at Jimmy Page's house in preparation for an American tour. On September 25, John Bonham was found dead in his bed -- following an all-day drinking binge, he had passed out and choked on his own vomit. In December of 1980, Led Zeppelin announced they were disbanding, since they could not continue without Bonham.

Following the breakup, the remaining members all began solo careers. John Paul Jones returned to producing and arranging, finally releasing his solo debut, Zooma, in 1999. After recording the soundtrack for "Death Wish II", Jimmy Page compiled the Zeppelin outtakes collection Coda, which was released at the end of 1982. That same year, Robert Plant began a solo career with the Pictures at Eleven album. In 1984, Plant and Page briefly reunited in the all-star oldies band the Honeydrippers. After recording one EP with the Honeydrippers, Plant returned to his solo career and Page formed the Firm with former Bad Company singer Paul Rogers. In 1985, Led Zeppelin reunited to play Live Aid, sparking off a flurry of reunion rumors; the reunion never materialized. In 1988, the band re-formed to play Atlantic's 25th anniversary concert. During 1989, Page remastered the band's catalog for release on the 1990 box set Led Zeppelin. The four-disc set became the biggest-selling multi-disc box set of all time, which was followed up three years later by another box set, the mammoth ten-disc set The Complete Studio Recordings.

In 1994, Page and Plant reunited to record a segment for "MTV Unplugged", which was released as No Quarter in the fall of 1994. Although the album went platinum, the sales were disappointing considering the anticipation of a Zeppelin reunion. The following year, Page and Plant embarked on a successful international tour, which eventually led to an all-new studio recording in 1998, the Steve Albini-produced Walking into Clarksdale. Surprisingly, the album was met with a cool reception by the record-buying public, as Page and Plant ended their union shortly thereafter, once again going their separate ways (Page went on to tour with the Black Crowes, while Plant resumed his solo career). Further Zeppelin compilation releases saw the light of day in the late '90s, including 1997's stellar double-disc BBC Sessions, plus Zep's first true best-of collections -- 1999's Early Days: The Best Of, Vol. 1 and 2000's Latter Days: The Best Of, Vol. 2. A full reunion of the surviving members of the band, with Jason Bonham filling in for his late father on drums, took place in 2007 when the group played a historic concert at London's 02 in memory of Atlantic Records founder Ahmet Ertegun. The set was filmed and recorded, and finally appeared as a commercial release under the title Celebration Day in the fall of 2012.

Stephen Thomas Erlewine, Rovi