Machine Head is an American heavy metal band from Oakland, California. The band was formed in 1991 by vocalist/guitarist Robb Flynn and bassist Adam Duce. The band's aggressive musicianship made it one of the pioneering bands in the new wave of American heavy metal, and it is also considered to be part of the second wave of thrash metal bands from the 1990s. Machine Head's current lineup comprises Flynn, bassist Jared MacEachern, guitarist Wacław Kiełtyka and drummer Matt Alston. Duce, guitarists Logan Mader, Ahrue Luster and Phil Demmel, and drummers Tony Costanza, Chris Kontos and Dave McClain are former members of the band; Mader and Kontos are currently touring with the band as part of the 25th anniversary tour for its first album, Burn My Eyes.
Machine Head's first four albums earned the band a growing fan base in Europe, however the band would not have success in their native United States until later releases. The band drew controversy with its fourth album, Supercharger, released three weeks after the September 11 attacks, which resulted in the album's only single, "Crashing Around You", and its music video being pulled from all media outlets.
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