Roots of Chris Reifert

Clive Ronald Burr was an English musician. He was the drummer of the heavy metal band Iron Maiden from 1979 to 1982. Together with fellow Iron Maiden member Dennis Stratton, he joined Praying Mantis for the recording of their 1996 live album Captured Alive in Tokyo City.

Slayer is an American thrash metal band from Huntington Park, California, formed in 1981 by guitarists Kerry King and Jeff Hanneman, drummer Dave Lombardo and vocalist/bassist Tom Araya. Slayer's fast and aggressive musical style made them one of the "big four" bands of thrash metal, alongside Metallica, Megadeth, and Anthrax. Slayer's current lineup comprises King, Araya, drummer Paul Bostaph, and guitarist Gary Holt, who initially joined as a touring musician in 2011 before joining the band permanently after Hanneman's death in 2013; the drummer Jon Dette is a former member of the band.

Terrorizer is an American deathgrind band from Los Angeles, California. It was originally formed in 1985 as Unknown Death by vocalist Oscar Garcia and guitarist Jesse Pintado. They would rename themselves Terrorizer after recruiting drummer Pete Sandoval, who remains the band's sole constant member throughout their discography, in 1986. The band's current lineup consists of Sandoval, bassist David Vincent, vocalist Brian Werner and guitarist Richie Brown. They are currently signed to Earache Records.

Possessed is an American death metal band, originally formed in 1982 in the San Francisco Bay Area. Noted for their fast style of playing and Jeff Becerra's growled vocals, they are often called the first band in the death metal genre, and paved the way for the 1980s Bay Area thrash metal scene, along with Metallica, Exodus, Testament and Death Angel. The band is also notable for featuring then-teenage guitarist Larry LaLonde, who went on to join Primus.

Witchfinder General was an English heavy metal and doom metal band from Stourbridge. They were part of the new wave of British heavy metal and have been cited as a major influence on the doom metal genre. They were named after the 1968 British horror film Witchfinder General, itself based upon the infamous witchhunter known as Matthew Hopkins.