The programme Harmony of the Spheres is centred around the piece In Nomine of a little known Englishman of the 16th century, Mr. Picforth. In this piece each of the five voices represents one of the five planets recognised throughout that time—Mercury, Venus, Mars, Jupiter and Saturn […]. All notes within one voice have the same length throughout the whole piece, but each part has its own duration, resulting in a pulse proportion of 12:8:6:3:4. The parts move like the planets on their trajectories to be once in opposition and then in conjunction.

Giso Grimm, et al., “Harmony of the Spheres: Cosmology and Number Aesthetics in 16th and 20th Century Music for Viola da Gamba”