How many movies have Claude Debussy and Jean Sibelius collaborated on?

They have worked on 2 movies together! Their first movie together was Toscanini: The Television Concerts, Vol. 8: Franck, Sibelius, Debussy and Rossini (1952) while their highest rated movie together was Allegro non troppo (1976). They have not worked together since Allegro non troppo (1976).