OpenGameArt.org
Peace At Last (Loop)
Credit line
"Peace At Last (Loop)" by Trex0n licensed CC0: https://opengameart.org/content/peace-at-last-loop Author's attribution notice: Credit would be appreciated (Cal McEachern) as well as a link to what you've created with my work.
Where to put it: Game credits or video description. If the entry has a "Copyright/Attribution Notice", follow that.