OpenGameArt.org
UnicornTales
Scott Jacob Jinglehiemer Schmidt
Credit line
"UnicornTales" by Scott Jacob Jinglehiemer Schmidt licensed CC-BY 4.0: https://opengameart.org/content/unicorntales Author's attribution notice: Song written by Scott Jacob
Where to put it: Game credits or video description. If the entry has a "Copyright/Attribution Notice", follow that.