Very nice balance.
fast Enough to raise your adrenaline but not so discordant as to break your concentration.
Ever play castlevania? This has a nice flow, and a nice rythm to it. Its pretty good. The main thing most of the music artists on newgrounds need to do is make better quality music and sounds. By this i mean instruments and things that would trick me into thinking it was an actual symphony playing, as a pose to atari. But i can't quite fault you on this if this is a video game song for flash. Keep up the good work.
No I haven't played Castlevania; am I missing out?
I see your point with sound quality. However, very few people actually have setups with the capability of producing "real" sounds, as the equipment for it is surprisingly expensive, and short of recording a real orchestra, there's little that can be done. Guess we will just have to stick with our sequencing packages :).
Please contact me if you would like to use this in a project. We can discuss the details.