OpenGameArt.org
Free Music Pack Two Of Three
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"Free Music Pack Two Of Three" by Stefan_Composer licensed CC-BY 4.0: https://opengameart.org/content/free-music-pack-two-of-three Author's attribution notice: Music by Stefan Grossmann https://soundcloud.com/stefan-grossmann-1
Where to put it: Game credits or video description. If the entry has a "Copyright/Attribution Notice", follow that.