Roberto, a 10-year-old boy, is drawn to music. An old organist discovers his gifts, and begins his musical education which will lead him to the head of an orchestra.
Roberto
Victor Dumonteix
Madame Dumonteix
Fleuriot
Maréchal
Announcer
Cashier
Theater director
Second-hand dealer
Antonia
Berthier
Blind man
Josette
Gabriel
Hairdresser
Mademoiselle Duchemin
Josette's mother