Part 3 · Rudiments · Chapter 41
The buzz roll (or multiple-bounce roll) presses each stroke into the head so it buzzes several times. Alternating buzzing strokes quickly makes a smooth, sustained sound. It is written with a z through the stem.
Each note is one buzz. Press slightly into the head with relaxed fingers.
Buzz for three beats, tie into an accent on 4.
The most common problem is one hand buzzing longer than the other. Practice slow buzz strokes, one hand at a time, until they match.