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=USUAN1100362

MacLeod's description:

Genre: Stings
Length: 0:20
Instruments: Percussion, Bass, Synth
Tempo: 120


ISRC: US-UAN-11-00362
Dark, Eerie, Mysterious, Unnerving 2007