The wind instruments sound amazing here (especially at 1:02) and I'm really digging the trills. Vocals also sound great - together they produce a really tribal sound. If there's any critique I can make here it's that it sounds like the song is building up to something big, whether it's louder or faster or both. This isn't bad in and of itself, except that the listener never really gets that payoff (and I was REALLY looking forward for the drums to kick in the door, guns blazing and start pounding away.)
Overall outstanding piece, but doesn't really resolve.