Roots of Severed Survival

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.

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.

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.