Mathematical music, systematically following finite automata, for six percussionists. Eighteen short movements, 50 minutes in all, but playable in incomplete versions. Score and material offered in one

A collaboration with Luiz-Henrique Yudo for six percussionists. The music goes BACK & FORTH between the two composers every 10 seconds following two graphic designs made by each composer. Exactly 10

Five movements for percussion trio: Similarities, Differences, Canons, Well-Formed, and Mirrors. Easy to play for percussionists who never make mistakes. Small instruments. About 15 minutes.

Three percussionists [one cowbell, one wood block, one bongo] seem to be "mocking" one another as they progress from one rhythm to another slightly different rhythm, all nicely charted in graphic

One of the key works in the evolution of the composer, who often played it himself, on his set of nine bells, suspended from the ceiling. A few rather athletic percussionists continue to present the work.

How can different rhythmic patterns be combined in such a way that no two patterns ever occur simultaneously and every beat is filled? "Tiling the line" is a subject that Johnson and several mathematicians