OpenGameArt.org
DarkBasic Music Library
Credit line
"DarkBasic Music Library" by es20490446e licensed CC-BY 4.0: https://opengameart.org/content/darkbasic-music-library Author's attribution notice: ACTION AND ADVENTURE: - Author: Pix - Year: 2000 - License: CC-BY-4.0+ (https://creativecommons.org/licenses/by/4.0/) FANTASY AND HEAVY: - License: CC0 (https://creativecommons.org/share-your-work/public-domain/cc0/)
Where to put it: Game credits or video description. If the entry has a "Copyright/Attribution Notice", follow that.