Well, first off, this really belongs in the Chamber Music section, but I'm not a moderator so I'll let them handle that.
As for the music itself, you have a very broad and powerful opening. You have several nice ideas declared up front, and they slowly evolve until around 1:10 the original feel of the piece has transmutted into a more myterious moving theme. This whole piece has a definite feel of constant motion to it, even though it is moving quite slow for most of it.
The only weakness you have is that you draw out the short figurations you have that lie beneath the melody longer than you ought. I refer of course to th epassages aroudn 0:50 and right near the end. You should consider cutting those short or putting more melodic material over them to cover up their repetiveness.