Erv Wilson's combination product sets — each tone is the product of a subset of odd generators.
hexany: the six pairs from 1·3·5·7, an octahedron. dekany: the ten pairs from 1·3·5·7·9.
eikosany: the twenty triples from 1·3·5·7·9·11.
connected nodes share all but one generator · click to build chords.