the primary or full note and a 4 Stroke Ruff has 3 singles before the primary note. Other rudimental systems have differing sticking methods and names for similar notation figures. Though still used and taught by drummers and drum teachers in practice, the 3 Stroke Ruff and 4 Stroke Ruff are not officially listed on the NARD or PAS rudiment sheets and the term Drag has eclipsed Ruff (or Rough) for the double stroked rudiments, in both open or closed execution, according to the current PAS standard terminology. Flam A flam consists of two single strokes played by alternating hands (rL or lR). The first stroke is a quieter grace note followed by a louder primary stroke on the opposite hand. The two notes are played almost simultaneously, and are intended to sound like a single, broader note. The temporal distance between the grace note and the primary note can vary depending on the style and context of the piece being played. In the past, or in some European systems, open flams and closed flams were listed as separate rudiments. Charge Stroke A charge stroke is a special variation on an open flam in which one or both of the notes are accented to provide a driving feel that can create the illusion that the downbeat has moved earlier in time. The two major types are French Lr or Rl and Swiss LR or RL with the first note preceding the downbeat, which falls on the second note, in both types. Charge strokes can be combined with flams or drags to create complex grace note figures preceding a downbeat. Roll Drum rolls are various techniques employed to produce a sustained, continuous sound. Percussive Arts Society rudiments Rudiments according to the Percussive Arts Society. There are more than 850 rudiments worldwide, but these 40 are the current American standards, referred to as “international” because they mix rudiments traditionally used in Anglo-American drumming with several drawn from the Swiss Basel drumming tradition. They were compiled by a committee led by Jay Wanamaker in 1984 that also happened to include William F. Ludwig Jr., son of the founder of NARD in 1933. In contrast, there are 26 rudiments between the NARD 13 Essential and 13 Rudiments to Complete sheets, 46 rudiments on the Scottish Drumming Rudiments sheet, and 42 rudiments on the French/Swiss Rudimental Codex sheet. Roll rudiments Single stroke rudiments The single-stroke