Very cool.
I thought the violin at the start might have been too loud, but by the time the cello comes in at 0:07 that thought goes out the window. Really nice harmonies between the two instruments, especially around the 0:14 area. I don't...really know what it is at 0:16-0:18, but it sounds like something has a bit too much reverb, or an instrument isn't pronounced enough. To the point where it's kind of sitting in between "working really well as a kind of ethereal thing" and "muddy sounding". I'd be more precise, but I can't work out why I think it sounds like that. Maybe just take another listen yourself and decide whether it's just me or whether something needs editing a little.
I love the addition of the harp at 0:22, but the start of the violin arpeggio at :28 is too loud. Cool, but too loud for me. Though the run-down between 0:31 and 0:32 is pure awesome.
The kinda refrain after 0:43 is perfect. nice harmonies, nice melodies, nice ambience in general.
The percussion around the 0:58 mark could use turning down a little, simply because the other instruments involved aren't very loud themselves and the percussion kinda cuts into them a little.
The voice accompaniment is AWESOME. Especially at the 1:26 where it takes more of a solo-type feel. The sliding between the notes there (And as well with one of the instruments before) kind of give it a little touch of an eastern vibe, which is a nice surprise.
All in all, I really like it. It's got a good ethereal quality, with enough extra additions to make it the kind of thing you can listen to again and again. Could use a little bit of fine tuning, but apart from that it was well worth listening to. 10'd, 5'd.