I hear all the softer and louder parts, but only on my ATH-M50S. It does sound muddy, I'll give one reviewer that. But I think with the way you wanted your piano to sound, you made it ambient and it just sounds like you took a cutoff frequency control and turned it a little ways down.
I can say all the notes are in the right place, some rhythm issues with the melody is off. But I'm sure another listen will fix that. At the time. I think there is some messy notes at 4:26-4:40 or it may be the key is off tune. I'm real quick about picking up on a piano that has a TINY ITTY BITTY WITSY BIT of tuning issues.
Wow, 8:55. This is just too much like a classical movement. I love it. I just wish you could put more emotion into your notations [notes]. But then I get bursts of climax which makes it sound really nice.
There are some parts I'd love to see softer too. Then it can become a really AWESOME classical movement. Here we go, climax. Tons of them! Great!
My favourite part is probably the ending parts, about 1-2 mins from the end. It's well put together. Or it's just my taste. :P