On July 14, 1518, Mrs. Troffea began dancing and was unable to stop. Before long, others were joining in. What caused people to begin dancing and not be able to stop, even to the point of death sometimes?

Music by JuliusH "Mystery Bells - Ambient Chill Out Music"

Transcript and references available at https://thatsruddymysterious.wordpress.com/2023/08/15/the-dancing-plague/