Roots of Toxic Holocaust

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.

Bathory was a Swedish extreme metal band formed in Vällingby in March 1983. Frontman and sole songwriter Thomas "Quorthon" Forsberg was the sole constant member, and was at times responsible for all instruments.

Sodom is a German thrash metal band from Gelsenkirchen, formed in 1982. They have gone through various line-up changes, with bassist/vocalist Tom Angelripper the only constant member. The band is currently composed of Angelripper, guitarists Frank "Blackfire" Gosdzik and Yorck Segatz, and drummer Toni Merkel. Sodom has been referred to as one of the "Big Four" of Teutonic thrash metal, along with Kreator, Destruction and Tankard. Sodom heavily influenced the German black metal scene, and is regarded as a pioneer of death metal. Referred to as the most Venom-blackened of German "Three Kings", Sodom further merged thrash and death metal into a "wicked and decadent sound."