“Just intonation is a matter of reducing pitch relations to simple ratios. When I did the same with rhythms, I got Knocking Piece. That piece has nothing to do with serialization; it just so happens that the pitch sequences that I used as the model for Knocking Piece came from a serial piece. But the rhythmic organization is proportional, very much so. I mean, it’s sort of the ultimate exercise in Elliott Carter’s technique, since there’s a metrical modulation in every bar.”

Performance notes/Sample of score (PDF)

Performance by CCM Percussion Ensemble, April 2008. Phil Andrews and Joey Van Hassel: