Conlon Nancarrow: Study # 5 for Player Piano

Strict rhythmic figures in the bass with overlays of fast runs and chord motifs; two parts at the beginning, ends in thirteen parts (Jürgen Hocker)

A study in repeated patterns over two ostinatos at tempos of 5-against-7
(Kyle Gann: Annotated List of Works)

Study # 5 for player piano (video by playerpianoJH)

(Conlon Nancarrow)