I liked this a lot. There are really nice singing melodies in it and some lovely harmonies.
On the negative side, perhaps at times it sounds a bit confused - the writing for both instruments could be clearer, (but perhaps this is the sound of the recording?). Also, at times the direction of the music seemed a bit confused to me. You also appear to have written it in several sections - but perhaps there are too many of these? I thought the ending was a bit abrupt - you built it up excellently and then ended very suddenly.
However, although I can't comment very well without seeing the score, I loved (what I think was) the second section and the fourth section - they were very effective with a lot of direction and power and they sounded great.
Congratulations on your first post - it was well done.