Blast beat
Characteristics
A blast beat is traditionally played as an alternating single-stroke roll broken up between the kick drum and the snare drum. Blast beats are counted in 32nd or 16th notes. In a modern musical context blast beats are usually regarded as such when played at a minimum of above 90 beats per minute 32nd notes, or 180 bpm 16th notes. Early blast beats were generally quite slow and less precise compared to today's standards. Nowadays, a blast beat is normally played from 180 bpm 16th notes up to such high tempos as in the range of 250-280 bpm 16th notes (or even higher). There is also the "gravity blast", not to be confused with the one-handed gravity roll (see below). This technique uses the rim of the snare drum as a fulcrum, allowing two snare hits with one downward motion (essentially doing the work of two hands with only one).
Blast beat-6