Sweeney Todd: The Demon Barber of Fleet Street, is a musical by Stephen Sondheim. The musical was adapted to a musical slasher film by Tim Burton in 2007. Read more about the movie here.   (1) It's a mechanical razor in some of the shots where Sweeney opens it swiftly. Depp requested that the production department create mechanical razors for him because he had difficulty handling the actual ones. (2) Tim Burton insisted on making the film bloody. Sweeney's everything being so inside, he felt that the blood was his emotional release. (3) For his preparation of Adolfo Pirelli, Sasha