This is gonna be super-critical, so be warned.
Track 1: The progression's pretty simple, but it's okay. At least it sounds good. But it BEGS for a new progression later on. Try starting a new progression on A minor.
Actually, use this chord.
7
5
5
7
0
x
It's an A minor 9. It'll sound awesome after the last chord you use in the progression you already have. Like at bar 106. Figure out the next chord yourself, lol.
Track 2: I really don't like this track. It's repeating the same note from track 1. Make it do something else. Or use different notes. Or a different instrument, like somebody else mentioned.
Track 3: See track two. Everything's moving downwards. Something really needs to move upwards. Not immediately. Save it for later, it'll make a nice effect.
Bells: Nice touch with the ringing, but then you, once again, just copy what you've already done in the other tracks.
Piano: Again, same thing, until you go into that piano solo thing. Which is pretty cool, good job with that. One or two sour notes, but oh well.
Melody on track 4: Re-work it. Make it like a real wind instrument line. That line would weird to play all in one breath. Add some pauses (like cutting a not short on the end) where it sounds good. Think of your melodies like you're singing them. You can't sing a 16 bar melody without stopping for a breath, so work around that.
Later on, you KIND of do this, but it's a little awkward.
OVERALL: The form is very repetitive, and that gets on my nerves. This is something that tends to happen when you use TabIt. Because everything's already boxed up and outlined for you, there's a ridiculous propensity to copy and paste things over, and over, and over, and over again. You need to break away from this, somehow, while still sounding natural, while maintaining a flow of things.
In the end: Pretty good, keep it up.