Very well done
My only real complaint is that a few of the MIDI instruments seem a bit soft, particularly the trumpet. Compared to the percussion, the trumpet is soft and can get covered up, especially if other instruments are also playing. 1:32-1:43 is where this becomes most apparent.
If there are any other flaws, they are things that would probably take a professional musician to find. I tend to be extremely critical of flaws, so well done.