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=USUAN1100587

MacLeod's description:

Genre: Soundtrack
Length: 1:13
Instruments: Choir, Harp
Tempo: 53

Epic myth. Part of the hero's journey. Starts with a solo soprano, and later mixes a full choir. Ends assuming you'll mix it into another piece. 043
ISRC: US-UAN-11-00587
Dark, Eerie, Epic, Intense, Somber, Unnerving 2009