Roots of Annihilator

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.

Megadeth is an American heavy metal band formed in Los Angeles in 1983 by vocalist and guitarist Dave Mustaine. Known for their technically complex guitar work and musicianship, Megadeth is one of the "big four" of American thrash metal—along with Slayer, Anthrax, and Metallica—and is credited with helping to develop and popularize the genre. Their music features intricate arrangements, fast rhythm sections, dual lead guitars, and lyrical themes such as war, conflicts, politics, religion, death, and personal relationships.

Sacrifice is a Canadian thrash metal band from Toronto, Ontario. The band was formed by guitarists Rob Urbinati and Joe Rico in 1983.

AFM Records GmbH is a music label based in Schwalmstadt, Germany. They focus on the heavy metal musical genre, signing bands such as U.D.O., Doro, Lordi, Kotipelto, Masterplan, Nostradameus, Redlight King, and Annihilator.

Omen is an American heavy metal band formed in Los Angeles in 1983 by lead guitarist Kenny Powell.