What is "blast beat"

n. rapid beats of a drum which often come at set intervals or as on/off beats.

A blast beat is a drum beat that originated in hardcore punk and grindcore, and is often associated with extreme metal and more recently black metal and thrash. It is utilised by many different styles of metal. In Adam MacGregor's definition, "the blast-beat generally comprises a repeated, sixteenth-note figure played at a very fast tempo, and divided uniformly among the bass drum, snare, and ride, crash, or hi-hat cymbal." Blast beats have been described as, "maniacal percussive explosions, less about rhythm per se than sheer sonic violence".

Napalm Death is said to have coined the term, though this style of drumming had previously been practiced by D.R.I., Repulsion and others. Blast beats are made with rapid alternating or coinciding strokes primarily on the bass and snare drum. Diverse patterns and timings are also frequently used by more technical players, such as Gene Hoglan ( Dethklok/ Death/ Dark Angel/ Strapping Young Lad/ Fear Factory/ Testament), Alex Hernandez ( Immolation), Max Duhamel ( Kataklysm) and Flo Mounier ( Cryptopsy). Alternative styles of blast beats include performing two strokes of the bass drum followed by one stroke of the snare drum. Pete Sandoval frequently uses this technique.