As with kallog, my first thoughts turn to M-theory, i.e. the current edition of string theory, because it's poetically related to music. Imagine, the entirety of existence - the fundamental laws of physics, the randomness of quantum events, the emergent phenomena - all issuing forth as a cosmic symphony composed by ??? and performed by infinitesimal players. It's a magnificently beautiful concept which it would be very fitting to echo in your sound work. Maybe you might compose it in four movements using these themes: laws; randomness; emergence; conclusion. I suppose there are many ways to see it, and you would consider it in terms of your own - perhaps rigidity; flexibility; cosmic child; conclusion (however you see it), for example.

"Time is what prevents everything from happening at once" - John Wheeler