OpenGameArt.org
A Better World (Orchestral)
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"A Better World (Orchestral)" by Trevor Lentz licensed CC-BY-SA 3.0: https://opengameart.org/content/a-better-world-orchestral Author's attribution notice: Please credit me "Trevor Lentz" if you choose to use this.
Where to put it: Game credits or video description. If the entry has a "Copyright/Attribution Notice", follow that.