Vincebus Eruptum is the debut album of American rock band Blue Cheer. Released on January 16, 1968, the album features a heavy-thunderous blues sound, which would later be known as heavy metal. It also contains elements of acid rock, grunge, experimental rock, blues rock, stoner rock, and garage rock. A commercial and critical success, Vincebus Eruptum peaked at number 11 on the Billboard 200 albums chart and spawned the top-20 hit cover of Eddie Cochran's "Summertime Blues". Being an example of hard rock, it is also lauded as one of the first heavy metal albums.