This is a wonderful song!!
In ther o fthe orchestration I think all is fine.
There is something I cannot understand about the strings in the opening: it seems that there was some overlapping notes, right?
Anyway a little bit of reverb is something lacks here, at least for me (this is my humle opinion).
the choise of the instruments is very good!!
Overall GPO sounds very very nice!!!
Is the instruments starting just after the middle of the song a guitar?
It is nice.
And the voices?
Congrats on this piece,
I hope to hear more of your orchestration and works.