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=USUAN1100470

MacLeod's description:

Genre: Horror
Length: 1:15
Instruments: Piano

5/8 time gives this piano solo a really unsettling feel. It uses more of the range of the piano, and can be chopped up to suit scenes well. 038
ISRC: US-UAN-11-00470
Dark, Mysterious, Unnerving 2008