OpenGameArt.org
Ballad of Bits
Credit line
"Ballad of Bits" by Jan125 licensed CC-BY 4.0: https://opengameart.org/content/ballad-of-bits Author's attribution notice: Tracker modules are by default binary, but free editors exist. No special action requested.
Where to put it: Game credits or video description. If the entry has a "Copyright/Attribution Notice", follow that.