Every note, every swell, every instrument intro, every theme seems to have its place. While it may be "jazz" or "rock" in instrumentation or the feel of certain phrases, the compositional thought which went into this seems more in the classical tradition.
I really like the way it moves along, stating each theme no more than necessary.
Another musician would've taken the same themes and strung them together with more repitition to make a ten-minute piece, which would be very listenable but not nearly as captivating as these 536 seconds.
Please make more!