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=USUAN1100512

MacLeod's description:

Genre: Horror
Length: 4:38
Instruments: Cymbal, Bass, Trombone, Bells

A very dark piece heavily featuring cymbal and bells. Frequent Cymbal usage creates unnerving feeling. 3:08 prolonged trombone. Lasts almost 30 seconds. This piece is great for an eerie atmosphere. 037
ISRC: US-UAN-11-00512
Dark, Eerie, Mysterious, Unnerving 2008