Really great ambiance and vibe on this!
I have to agree with FoxHyode that the change to the second section at 1:35 feels a bit jarring, I'm not sure if having the talharpa stop playing together with the voices and letting the reverb decay before starting the second section would make flow better, just one thing I felt might work.
The spatial stuff works great, giving this the feel of being performed in a big space like a church to me.
Stellar stuff!