"Tumer", in Old French, means to dance, stir, or fall backwards. In the company of a collective of singing, dancing, and constantly transforming tumerels, Geoffroy Jourdain and François Chaignaud have concocted a mischievous review. Moving between different eras and genres, from polyphonic singing to variety, it brings this Portrait, and indeed the 2025 edition of the Festival d'Automne, to a close.