I'm not crazy about the chorus sound you're using, but I think it's cool how you're using it. This piece, though, is what I would call an onion. It's just a bunch of the same thing happening over and over but adding a lot more stuff- which is fine, but can sort of leave the listener hanging.
Finally at 1:45, we start a new onion! I really think this is a cool onion - much cooler than the original onion. I think the subtle implication of the choir and the slight change in its chord progression is cool.
One thing I have to say about the percussion, is it seems to sort of cancel out the sound of the rest of the instruments. I'm not sure if this is the effect you're going for, but I actually don't really like it a whole lot. The sound is just waving in and out because of the percussion.
This was a fun listen. Great stuff!
3.5/5