Roots of Eaten Back to Life

Exodus is an American thrash metal band formed in 1979 in Richmond, California. Their current lineup consists of guitarists Gary Holt and Lee Altus, bassist Jack Gibson, drummer Tom Hunting and lead vocalist Rob Dukes. Notable former members of the band include vocalists Paul Baloff and Steve "Zetro" Souza, drummers John Tempesta and Paul Bostaph, and founding guitarist Kirk Hammett who later joined fellow Bay Area thrash metal band Metallica. There are no original members left in Exodus other than Hunting, who had departed from the band twice, in 1989 and 2004, but rejoined in 2007. Holt, who has been in the band since 1981, is the only member to appear on every Exodus album. Much of the band's career has been affected by lineup changes, feuds between both band members and record companies, two extended hiatuses, deaths of former band members, and drug addictions.

Morbid Angel is an American death metal band based in Tampa, Florida, formed in 1983 by guitarist, primary composer and sole remaining original member Trey Azagthoth, vocalist and bassist Dallas Ward, and drummer Mike Browning. It was one of the first bands to incorporate guttural vocals, up-tempo blast beats, multiple tempo changes and a dark atmosphere. Morbid Angel was also the first death metal band to experience mainstream success in connection with being signed to Giant Records in 1992, heavy rotation of its music videos on MTV, and having the music video for the song "God of Emptiness" shown on an episode of Beavis and Butt-Head. The band's first three albums – Altars of Madness (1989), Blessed Are the Sick (1991), and Covenant (1993) – are considered classics in the death metal genre.