Wow, this is really neat! My feeling, although this might have been the effect you were trying to create, is that having each section repeated 8 times got too predictable, and it might be nice to mix it up and add, for example, a bar that repeats 7 times, or 9 times, or 3 times, or something. I really liked the middle section where you kept shifting the accent, but again I'd love it if the number of repeats changed.
The ending was really sudden though, it feels like the piece should fade out just as at the start it faded in. I don't know, overall it was great though!