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=USUAN1100401

MacLeod's description:

Genre: Soundtrack
Length: 4:23
Instruments: Strings, Percussion, Choir, Clarinet, Flute,

Multi-part cue that builds as it accelerates. 044
ISRC: US-UAN-11-00401
Action, Dark, Eerie, Epic, Intense, Mysterious, Suspenseful, Unnerving 2008