Phantom of the Paradise (1974) Brian De Palma

A naïve young singersongwriter, Winslow Leach (William Finley), is tricked by legendary but unscrupulous music producer Swan (Williams) into sacrificing his life s work. In revenge, the songwriter dons a menacing new persona and proceeds to terrorize Swan s new concert hall, insisting his music be performed by his most adored singer, Phoenix