When I talk about recreating the spirit of that world, the music is as important as the dialogue and the behavior. From 1947 on, music scored what was happening in the streets, the back rooms. And it affected, sometimes, the behavior of the people, because this music was playing in the streets. Jukeboxes were brought out during the summer. Windows were open, and you could hear what everybody else was listening to. It expresses the excitement of the time. Simply, it’s the way I saw life. The way I experienced life. - Martin Scorsese.