OpenGameArt.org
Funky
Credit line
"Funky" by FeniX licensed CC-BY 3.0: https://opengameart.org/content/funky Author's attribution notice: Konrad "FeniX" Gadzina - http://enklawa-tworcza.blogspot.com/
Where to put it: Game credits or video description. If the entry has a "Copyright/Attribution Notice", follow that.