Single Stroke Roll
R L R L R L R L
Practice tempo
What it teaches
Hand-to-hand evenness — matching volume, tone, and spacing between the right and left hand strike so the roll sounds like one continuous sound, not a lopsided right-left-right-left pattern.
The common mistake
The weaker hand (usually the left, for a right-handed player) strikes measurably softer or later than the dominant hand, producing an audible "gallop" instead of an even stream. The standard correction is drilling each hand alone until it matches the other's volume before recombining.
Tempo progression
Start at 60 BPM, one stroke per click, both hands equally loud. Once a full minute at 60 BPM sounds metronome-tight, add 10 BPM. Most players can keep a clean single stroke roll through 140-160 BPM before tone starts to break down; drum corps players train it well past 200 BPM.
Where it shows up
The building block under nearly every fill and the core technique behind a snare cadence — a drummer who can't play single strokes evenly can't play anything else evenly either, which is why almost every method book opens with this rudiment.