Some (Northern Hemisphere) Harvest/Lammas celebrations, only not called that.
This one, I think, is from Iran:
This one comes from the island of Cyprus:
And while we’re in the mood, let’s not forget Whitman McGowan’s “White Folks Was Wild Once Too,” with video that is NSFW if you work in a monotheistic or cultural-marxist environment:
And don’t forget “John Barleycorn”!