In a small city of Ouest of France, some kids sing a well known French song “Adieu monsieur le professeur”, meaning “goodby Mr the teacher”, because their teacher was leaving the school for ever.
The SACEM charged the school 75€ for that. They said this song cannot be sing during a school party for free.
Source: http://www.clubic.com/actualite-36663-insolite-75-euros-d-amende-pour-un-chant-d-adieu.html