Interesting.
Pretty good, pretty good. Highly dynamic, each phrase is different to the last and increasingly growing in complexity and intricacy as the song progresses further.
I feel the only issues I have with this is your beat and your main-stay flute (the low one) . They don't change, and while everything revolves around them (which works well, don't get me wrong) I felt as if they could use variations of themselves as well. They should progress as much as everything else around them, or at least to somewhat of a lesser extent. Different notations on the flute, an extra beat in the kit or another rim here and there. Things like that.
Also feel that the flute is lost among everything else that is happening. Especially during the one to three minute mark. Gets a little washed out here and there because of its range (Just me, though).
Some cymbal work would also be nice. Not talking harsh crashes or anything too over the top, but some small hi-hat hits or low-key crashes from a China. Get some of that high frequency content going, besides all or your string/choral work. It would give the drum beat a little more liveliness.
All that aside, I like this piece. If you've ever played Dark Cloud and listened to the dungeon theme of Muska Laka, this gives me some memories of that. Pretty awesome.
-J.P.