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=USUAN1100469

MacLeod's description:

Genre: Horror
Length: 2:05
Instruments: Piano

Alternate tuning is very apparent here, Deep voicing lends a very ominous quality. Sounds more like the mind of someone who is breaking. 038
ISRC: US-UAN-11-00469
Dark, Intense, Mysterious, Unnerving 2008