Iridescent Overture

This was originally composed for the September Challenge, but I decided not to submit it because it didn't really fit theme, and I also thought I could do better. This piece is definitely pretty decent, but I didn't think so when I first finished it. For me, I guess sometimes walking away from a piece for a while before coming back to it will change my opinion, as I don't even hear the minute details that I judged harshly before.