Music by Kevin MacLeod. Available under the Creative Commons Attribution 3.0 Unported license. Download link: https://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100179

MacLeod's description:

Genre: Horror
Length: 4:21
Instruments: Choirs, synth
Tempo: 90

A background pad full of human souls. A cacophony of choirs run in counter directions. This is very unpleasant to listen to at volume. 035
ISRC: US-UAN-11-00179
Dark, Mysterious, Unnerving 2007