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=USUAN1100660

MacLeod's description:

Genre: Soundtrack
Length: 0:56
Instruments: Piano, Percussion, Violins
Tempo: 93

Overplayed piano, subtle percussion, sweepy violins.
ISRC: US-UAN-11-00660
Dark, Eerie, Somber, Unnerving 2009