I really liked this. Very cinematic-like indeed. I can hear it playing with any sort of fantasy or scifi genre. The structure lost me a few times tho.
Around 2:10 the buildup ends and goes back to the soft low volume, then at 3:18 you start another buildup. Try swapping the first buildup with the last. Let it go from REALLY intense to soft, rather than a little intense to soft.
Keep up the great work.

WOW! incredible sound and buildup. Its got a very cinematic feel at the start, and the buildup reminds me a bit of ratatat. the noise near the end was a bit much for my taste, but otherwise i really liked this one!