Anton Karas asked a stunned Karas if he would compose the music for the film. Karas protested, saying he had never actually written music. As Karas later told the story, the director insisted and invited Karas to England. The Austrian became homesick and asked to be allowed to return. Reed told him he could—as soon as he had written the music. Under this pressure Karas wrote his Harry Lime theme. The film—with the music a contributing factor—was a gigantic success, and Karas' life was changed drastically. As a result, he toured all over the world and performed for many celebrities, among them
Film score is being edited, although on some occasions the composer is on hand during the entire film shoot, especially when actors are required to perform with or be aware of original diegetic music. The composer is shown an unpolished "rough cut" of the film, before the editing is completed, and talks to the director or producer about what sort of music is required for the film in terms of style and tone. The director and composer will watch the entire film, taking note of which scenes require original music. During this process, the composer will take precise timing notes so that