Various, Trojan, Far Cry, Racer, Rendezvous, Calibre, Del Rio, Terra Nova, M-16, Zela, Sylent Knight, Storm, Prey Don't Pray, M.B.M.

Bay Area Thrash Metal

Riffs cut like machine tools, tempos past 200bpm, and a garage circuit that rewrote American metal.

West Midlands Metal

Downtuned riffs from a factory city — Sabbath to grindcore, four decades of Birmingham making music heavier.