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=USUAN1100251

MacLeod's description:

Genre: Soundtrack
Length: 5:52
Instruments: Didge, Harp, Celesta, Bass, Cello, Violin, Bassoon, Conta Bassoon, English Horn, Oboe, Percussion
Tempo: 100

Minimalist-type piece. 030
ISRC: US-UAN-11-00251
Dark, Eerie, Intense, Mystical, Unnerving 2007