The document lists the cast of a film including Gérard Jugnot as Clément Mathieu, Francois Berléand as Rachind, and Jean-Baptiste Maunier as the child Pierre Morhange. It then provides background on Clément Mathieu, a sad and lonely former composer who lost his family and passion for music during the war. He initially struggles for authority in his classroom but grows to protect the students from punishment, gaining their appreciation.