The first and last tracks were prolly my favorites... "Again" and whatever the last one was called, I liked the piano's in them... they were really well constructed.... I would just work on your mix.. the piano still has that sort of cheap, box-y "I just came out of a low quality sampler" sound to it if you know what I mean... and since it's the standpoint of those two beats, all the attention is drawn to them.... just do an EQ sweep to try to find that sound... it's probably somewhere in the low mids, but just go hunting.... you could also boost the top end it open it up and brighten it up a little.
Hope any of that helped. Peace.