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=USUAN1100167

MacLeod's description:

Genre: Contemporary
Length: 2:47
Instruments: Piano

Slightly disconcerting, while retaining some lightness. 020
ISRC: US-UAN-11-00167
Somber, Unnerving, Eerie, Mystical 2006