Rudiment: single-stroke roll

     Rudiments are the basic vocabulary of the drums. They were created many years ago by
     the military snare drummers and are essential for developing your hand technique. The
     first rudiment we'll work on is the single-stroke roll. The single-stroke roll uses one stroke
     per hand: R-L-R-L (left-handed drummers can reverse the sticking L-R-L-R). Start
     slowly and work on the evenness of the roll. Don't be on a hurry to play fast! Speed
     comes later, when the technique is executed evenly on a consistent basis.

Single-stroke roll in quarter notes

Single-stroke roll in eighth notes

Single-stroke roll played in different note values
     Make sure to count and listen for consistency. Don't play too quickly at first; walk before
     you run!