Ah you used only default PxTone sounds for this? It sounds way better than what I could have done with the default sounds alone. :P
Generally, I like the music; it's simple, but there's some nice ideas going around here. The continuum is very pleasant, and I like the power from those toms. There seems to be a strange sounding note before the continuum repeats at 0:29; the note feels as though it should be moved up to the leading tone, fluctuating between a minor second rather than a major second. It seems as though that note is clashing with the chords as well.
That being said, I really like the minor shift that happens around 0:45. It really grabs my attention in a good way.