The sound in the film was complex for its time; it included dialogue spoken over ambient noises such as crowds at the airport and gunfire during the hunt. Film director Jean Prat said the film's soundtrack was "of a perfection never equaled by any French film." Characters often talk at once or talk over each other's lines. One example of the dense soundtrack is the party scene, which includes dialogue over screams, gunfire and music. Except for the opening credits and the very end of the film, all of the music heard in the film is incidental. The sound engineer was Joseph de Bretagne. Music used in the film includes Mozart's "Three German Dances", Monsigny's "Le déserteur", Louis Byrec, Léon Garnier and Eugène Rimbault's "", Strauss's "Die Fledermaus", Saint-Saëns's "Danse macabre", Chopin's "Minute Waltz" and Scotto's "À Barbizon". The music was arranged by Joseph Kosma and Roger Désormière.