music consists of data models from music theory, analyzed from a geometric perspective.
The key principle is that the
- partition of the audio spectrum into keys and the
- partition of time into pulsed beats
are treated as isomorphic.
On each dimension, models take after the number line if appropriate. For example, frequency is a real number, while the notes of the diatonic scale are integers.
[TODO] explain envelope theory
[TODO] visual exercise on the closed loops of beats and keys