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=USUAN1100104

MacLeod's description:

Genre: Soundtrack
Length: 1:48
Instruments: Piano, Strings
Tempo: 56

A striking chordal change keeps the first and second halves different. 036
ISRC: US-UAN-11-00104
Dark, Mysterious, Somber 2007