The piano melody here! So good! It grabbed my attention right away! I also like that fading in and out saw you got going on there, gives it an air of tensity.
The bass should be slightly louder in my opinion, but then again i'm using quite bass light earphones so it doesn't pick it up that well, I could be very wrong.
The transition where you went from piano to guitar was a bit choppy, I would suggest you added a large cymbol crash right when the guitar kicks in to provide the listeners the knowledge that you have changed something.
The same can be said when it goes from guitar to Piano.
I would also like to hear this piece with a more complex drum beat, this one is fine, don't get me wrong, however I think it would make the piece more eneregetic to have a snare in there, especially when the guitar kicks in.
4/5 from me Zakk, keep them coming.