I like this because it starts off sad, but as the trumpet comes in it lifts the mood. The mood just lifts higher from there, while beginning to drop down at the end; much like before a relationship, the highpoint of it, and the end of it.
I liked it a lot.
I'm afraid I have to disagree with Jemoth though.
It doesn't really strike me as a song about relationships, but more like a song about life. The piano starts off alone and just moves along. Then it meets the trumpet, which seems to be moving along by itself as well, and they seem to begin moving with purpose. Then they begin to grow with each other and reflect on one another. But eventually the piano begins to fade into the background.
I think it would've been better if you had continued it on for another fifty seconds or so with the piano fading more and more until it ended with just the trumpet playing by itself.
but still I love it as it is.