Hårgadansen (“The Hårga dance”) is the story of when the devil came to the village of Hårga in Hälsingland, Sweden. Playing tunes on the violin they had never heard before, all the youth followed him up a mountain where they danced and danced until all that was left was their skeletons. 

It’s said that you can still see the marks of the dancers and if you’re brave enough to traverse the mountain during a full moon, you can hear the devil playing his music.

A story from Swedish folklore. Nowadays, the moment is immortalised in several folk tunes and music scores.