4 choirs of the region on stage, for a program of Bach to the present day! «Perhaps the gap between the generations is much more in form than in substance» (Marcel Aymé, Uranus): this reflection of Marcel Aymé resonates particularly in this program, which makes coexist several generations of composers, from Bach to the present day, as well as a hundred children under the benevolent sponsorship of the professional choir Hemiolia. The sound, the common vibration give substance to the social bond: it is the power of music to gather and federate beyond the centuries, cleavages, cultures. May this program echo it!