Each loop consists of a set of evenly-spaced subdivisions or rhythmic onsets. Tyler’s thesis contains the clearest definition of the terms that I know of, which I paraphrase here. The words “polyrhythm” and “polymeter” are frequently used interchangeably, but they are not the same thing. This means that you can use the Groove Pizzeria to make polyrhythm and polymeter. The Groove Pizzeria gives you two sets of concentric rhythm necklaces, each of which can have its own time duration and subdivisions.
The Groove Pizza is a set of three concentric rhythm necklaces, each of which controls one drum sound, e.g. Like the Groove Pizza, the Groove Pizzeria is based on the idea of the rhythm necklace, a circular representation of musical rhythm.
You can record the Groove Pizzeria’s output using Audio Hijack, however. As of this writing, there are no presets, no saving, no exporting of audio or MIDI, and no changing drum kits. Note that the Groove Pizzeria is still a prototype, and it doesn’t yet have the full feature set that the Groove Pizza does.
For his NYU music technology masters thesis, Tyler Bisson created a web app called Groove Pizzeria, a polyrhythmic/polymetric extension of the Groove Pizza.
