OpenGameArt.org
The End of an Era (Remake)
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"The End of an Era (Remake)" by Umplix licensed CC-BY 4.0: https://opengameart.org/content/the-end-of-an-era-remake Author's attribution notice: Credit nene.
Where to put it: Game credits or video description. If the entry has a "Copyright/Attribution Notice", follow that.