Composer Bear McCreary and vocalist / contractor Bobbi Page discuss the use of choirs in the score for "Da Vinci's Demons."
For more details about the third episode of "Da Vinci's Demons," read the composer's blog entry:
http://www.bearmccreary.com/#blog/da-vincis-demons-the-prisoner/
"Da Vinci's Demons" Soundtrack Album Available Now from Sparks & Shadows, on iTunes and Other Digital Retailers:
https://itunes.apple.com/us/album/da-vincis-demons-original/id652907681