I will actually be a music major this fall
Plus oboe is my principle instrument. About this new midi, it's gorgeous! but the cello can only go down to the c two octaves below middle c. Either bring it up an octave or give that part to a contrabass. And the ocarina is interesting, but it gets covered up in the last section. There exists an alto flute (range to g below middle c) and a bass flute (octave below middle c) also, so I think it'd be ok to leave that part as a flute.
Perhaps you could find an instrument range chart online, I've found one before but I don't remember where, since most of the problems seem to be with that. Or you could just leave it the way it is since it is a midi, I don't think many people will be able to tell. Excellent work!

Perhaps you could find an instrument range chart online, I've found one before but I don't remember where, since most of the problems seem to be with that. Or you could just leave it the way it is since it is a midi, I don't think many people will be able to tell. Excellent work!