Talking with Phil:

– three musical time primitives: before, during, after.  These might collapse into after and during.  These are “interpreted” into linear time.  Maybe there are other relationship primitives? (Faster, slower? Brighter, dimmer?)

– there’s a mode of interaction that’s something between out of time composition and linear in time performance, sort of a back and forth dialog with a piece in real time. What’s that called?