OpenGameArt.org
Ambient Horror Track 01
Credit line
"Ambient Horror Track 01" by CleytonKauffman licensed CC0: https://opengameart.org/content/ambient-horror-track-01 Author's attribution notice: Music by Cleyton Kauffman - https://soundcloud.com/cleytonkauffman
Where to put it: Game credits or video description. If the entry has a "Copyright/Attribution Notice", follow that.