Harano Sur (transl. The Lost Tune) is a 1957 Indian Bengali-language romantic drama film by Ajoy Kar, starring Suchitra Sen and Uttam Kumar, with music by Hemant Kumar, and sung by Geeta Dutt. This is the first film that Uttam had produced along with Ajoy Kar. The film is regarded as one of the finest examples of Bengali cinema of this early period. The film is based on the 1942 American film Random Harvest. The film become huge success at the box office. The film become all time blockbuster and the highest grossing Bengali film in 1957