is a hardcore punk subgenre named after British band Discharge’s signature drum pattern. Emerged in early 1980s in United Kingdom, spread worldwide, especially Sweden’s kängpunk (Anti Cimex, Mob 47). Hallmarks: relentless kick–snare “d” beat, buzzsaw guitars, blown-out distortion, shouted, politically charged vocals. A cornerstone for crust punk and a major influence on hardcore and extreme metal.