A blast beat is a drum beat often associated with grindcore and death metal, although its usage predates those genres and has spread to many other forms of extreme 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 kick 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 (Strapping Young Lad/Dark Angel), Alex Hernandez (Immolation) or Flo Mounier (Cryptopsy). Alternative styles of blast beats include using a two strokes on bass drum followed by one stroke of the snare drum, such as played by Pete Sandoval (Terrorizer, Morbid Angel), or using scarce strokes on the bass drum, which are frequently played by Max Duhamel (Kataklysm).