Ferneyhough Rhythmic Complexity

Build a deeply nested Rhythm Tree with multiple layers of tuplet subdivision — for example, a quintuplet where individual beats are further divided into septuplets or nested triplets. This creates the characteristically dense notational surface of new-complexity writing.

Feed the rhythm tree through Insert Rests with a binary mask (e.g., [1,0,1,1,0,1,0,0,1,1]) to selectively silence events. The proportional structure is preserved but certain attacks are removed, creating rhythmic patterns of presence and absence that break up the regularity of the underlying subdivisions.

Then apply Rest Density with a BPF curve to add an additional layer of time-varying rest probability — perhaps beginning dense and gradually thinning out, or the reverse. Finally, connect Grace Notes to add Ferneyhough-style gestural ornament clouds around the surviving main pitches, with density and range parameters controlling the proliferation of ornamental material. The result is a richly layered rhythmic surface where structural rhythm, rest patterning, and gestural ornamentation interact.