Thrash metal

"Bands such as Metallica, Slayer and Sodom, inspired by the new wave of British heavy metal, added aggressive staccato guitar riffs and a pronounced punk influence to forge thrash metal."

""Thrash" wasn’t used that much as a term in 1982. I think it was more in 1984, with speedsters like Exodus, Slayer, Possessed, and Suicidal Tendencies, that we called them thrash and not just metal or punk."

"[Punk rock and heavy metal] were pretty segregated [before 1982]. I’m sure there were people from both those scenes that went to different shows but we didn’t book any shows with, like, Black Flag or TSOL. We never booked shows with those guys, which I regret, because I think it would have opened people’s eyes. That’s where the thrash thing came from, it crossed over from the punk element. Consider the circle mosh and stage diving and stuff like that – that came directly from the punk scene."