A Masterpiece
What an amazing piece. Perfect for any intro or ending cutscene for anything I can think of. Wow... To date (2/27/08), I think I've only ever given two 10s in all my time my time on Newgrounds, and this is one of them. I'm speechless. Excellent work.
The only thing I would recommend is, at the end, after all the hits come and the last hit sounds, finish off with one long, soft note. Other than that, I can't think of anything, amazing job. I'm going to vote on all your entries.
-ReigningDarkness