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=USUAN1100037

MacLeod's description:

Genre: Soundtrack
Length: 1:24
Instruments: Piano

Only notes from the very highest registers of the piano are used in this. It can cut through ambient noise and still provide a presence. 028
ISRC: US-UAN-11-00037
Relaxed, Somber 2006