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=USUAN1100651

MacLeod's description:

Genre: Unclassifiable
Length: 2:20
Instruments: Piano, Synths, Choir
Tempo: 70

Processed piano is featured, leaving a deep uncertain texture. Tempo is highly variable.
ISRC: US-UAN-11-00651
Dark, Eerie, Mysterious, Somber 2009