Discover the operation of a pipe organ thanks to models and a guided tour of the instrument in the gallery. Detailed program: The Town Hall of Castanet Tolosan in collaboration with Les Amis des Orgues organizes: - Exhibition on the organ and music in Castanet (in particular carillon, subrejougs, local compositions sung, etc...). - Visit of the instrument to the church and workshops on small educational organs, models in the adjoining Ginette Forgues room.