This may be my favorite NGADM piece I've heard yet. It moves through so many emotions so effortlessly. The piano playing is complex but never unnecessarily so. There is such good counterplay between the different instruments. I love how the part at 1:20 is such a nice contrast to the earlier stuff, and yet it fits so well. And oh my god, your ending is sooo well done. There is some sort of melodic inevitability to it - it feels like the ending starts as far back as 1:43 and builds gracefully to that awesome descent at 2:02.
Critique? I don't even know. That one glissando at :47 sounds off, but that seems more like the problem of your sample then a problem with the composition itself. The phrase at :27 could be extended a little bit (I feel like the resolution comes a little too early).
This is between a 9 and a 10 for me. And I feel like it's mostly my fault for not giving it a 10, since I almost never listen to classical music and sometimes have trouble understanding it. (I need to listen to it more!) Regardless though, very, very well done!