I enjoyed every part of this song -- it's not everyday that I can say something like that, but this.... this is truly awesome. This is the sort of song I could show to someone if I wanted to show them what Newgrounds had to offer, and I'd say, "Cool music," and play this. :D
The trumpets (please, like usual -- correct me if I'm wrong) played a surprisingly catchy tune throughout the song except in a few parts. And for me, that was my favorite part of all of them -- it was the melody while keeping the beat at the same time, and it sounded incredible.
The more techno-ish parts (more synthesized) sounded great too... again, I'm normally not this sort of fast beat kind of guy, but I really enjoy how you make the sound accessible and with an overall good quality -- compared to the other loops on Newgrounds, this stuff is gold. :D
The only problem I had with were the bass drums right before the end (only before the end -- they sounded good to me throughout the entire rest of the song...) -- I didn't particularly enjoy them, but I've never truly enjoyed percussion as much as other people... and it's no reason to dock anything from this amazing composition.