I might be a bit biased because this is the type of music i LOVE, so i will try to be neutral.
I love the first minute build up, that alone could have been made into it's own ambient track, i loved the tone that you got on the... (I can't say for sure, Xilopphone? Marimba? Glocken) , is really pretty and works amazingly, same for the piano. I am not enterely fond about the string that enter at 3:00 though, aside from that, this is perfect.
Btw, Scouted you, this is great ^-^