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=USUAN1100410

MacLeod's description:

Genre: Soundtrack
Length: 1:39
Instruments: Piano, Basses, Oboe, Synth Bells
Tempo: 110

Dark, creepy theme with a modulation about 2/3 of the way in. 030
ISRC: US-UAN-11-00410
Dark, Eerie, Mysterious, Somber, Unnerving 2008