Thrashcore

Thrashcore (also known as fastcore) is a fast-tempo subgenre of hardcore punk that emerged in the early 1980s. Thrashcore is essentially sped-up hardcore, adopting a slightly more extreme style by means of its vocals, dissonance, and occasional use of blast beats. Songs are usually very brief, and thrashcore is in many ways a less dissonant, minimally metallic forerunner of grindcore. The genre is sometimes associated with the skateboarder subculture.

Thrashcore is often confused with crossover thrash and sometimes thrash metal. Further confusion is added by the fact that many crossover bands, such as D.R.I., began as influential thrashcore bands. The "-core" suffix is necessary to distinguish it from the thrash metal scene, which is also referred to as "thrash" by fans. Still more confusingly, the term "thrashcore" is occasionally used by the music press to refer to thrash metal-inflected metalcore.

Just as hardcore punk groups distinguished themselves from their punk rock predecessors by their greater intensity and aggression, thrashcore groups (often identified simply as "thrash") sought to play at breakneck tempos that would radicalize the innovations of hardcore. Early American thrashcore groups included Cryptic Slaughter (Santa Monica), D.R.I. (Houston), HYPE (Toronto, Canada), Septic Death (Boise, Idaho) and Siege (Weymouth, Massachusetts). The British Electro Hippies, the Dutch Lärm, the Italian Raw Power, and the Japanese S.O.B. also practiced important examples of the style. Some of Negative Approach's later work was influential on the scene.

The powerviolence scene grew out of thrashcore as an American counterpart to the British grindcore scene, which had emerged from crust punk, with bands such as Septic Death, Infest and Siege being the first to move towards the style. Powerviolence groups saw themselves as distinct from grindcore because of the increasing proximity of grindcore groups to the death metal being performed in Florida, Sweden, and Brazil. Powerviolence groups wished to avoid the association with heavy metal music and culture that crossover thrash, thrash metal, and grindcore had made, while also incorporating "tempo changes with droney and sludgey down tempo parts". As well as from thrashcore, powerviolence groups also took inspiration from crust punk, and eventually from noise music. Main groups associated with powerviolence included No Comment, Hellnation, Man Is The Bastard, Crossed Out, Charles Bronson, Spazz and Rorschach.