Speed metal eventually evolved into thrash metal. Slayer is considered a thrash metal band. Groove metal is heavily influenced by thrash metal. The thrash metal band Anthrax also helped pioneer the genre. Overkill's sound has influenced the genre of thrash metal. Demonic is the seventh studio album by American thrash metal band Testament. Worship Music is the tenth studio album by American thrash metal band Anthrax. Jourgensen seemed particularly fond of thrash metal. Most prominent genres are black metal, thrash metal, and speed metal. Dystopia is the fifteenth studio album by American thrash metal band Megadeth. Repentless is the twelfth and final studio album by American thrash metal band Slayer. Stomp 442 is the seventh studio album by American thrash metal band Anthrax. Low is the sixth studio album by American thrash metal band Testament. The same song also mentions Slayer, one of the band's thrash metal influences. Newsted joined Canadian thrash metal band Voivod in 2002.