It's sublime. The orchestral build-up is epic. The subtlety of the beginning with the intensity of the rest.
Since it's so good, I'll indulge in a little criticism: from 0'52", when the brass joins the strings, it's great. Both sections play the same melody, but at the end of the musical phases, they separate to complete the harmony. It sounds weird to me. Maybe it would have been better to keep them in unison, or play a real counterpoint. What do you think?
I'm nitpicking because the quality is there and it's undeniably a very pretty piece.