Various, Snake Rock, Drive, Britton, Steelmaster, Bedwild, Silent Rage, Tarrga, Fanz, Swan, Nightfall

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.