Roots of Human Waste Project

Helmet is an American alternative metal band from New York City formed in 1989 by vocalist and lead guitarist Page Hamilton. Helmet has had numerous lineup changes with Hamilton as the only constant member. Since 2010, the band has consisted of Hamilton, drummer Kyle Stevenson, guitarist Dan Beeman and bassist Dave Case.

Sacramento heavyweights whose alt-metal absorbed shoegaze and dream pop.

Korn is an American nu metal band from Bakersfield, California, originally formed in 1993 by James "Munky" Shaffer, Reginald "Fieldy" Arvizu and David Silveria, who were members of the band L.A.P.D. Their current lineup features Shaffer (guitar), Brian "Head" Welch (guitar), Jonathan Davis (vocals), and Ray Luzier (drums), the last of whom replaced Silveria in 2007. The band is notable for pioneering and popularizing the nu metal genre.

Coal Chamber is an American nu metal band formed by Dez Fafara and Meegs Rascón in Los Angeles in 1992, initially under the name She's in Pain. The original lineup also consisted of bassist Rayna Foss and drummer Jon Tor. Mike Cox replaced Tor on drums in 1995, and the Coal Chamber lineup was complete. After signing to Roadrunner Records, they released their debut album, Coal Chamber, in 1997.

System of a Down is an Armenian-American heavy metal band formed in Glendale, California, in 1994. Since 1997, the band has consisted of founding members Serj Tankian, Daron Malakian, and Shavo Odadjian (bass); along with John Dolmayan (drums), who replaced original drummer Andy Khachaturian.