Harano Sur (Bengali: হারানো সুর;English:The Lost Melody) is a 1957 Indian Bengali romantic drama film by Ajoy Kar, starring Suchitra Sen and Uttam Kumar, with music by Hemanta Mukherjee, and sung by Geeta Dutt. The film is regarded as one of the finest examples of Bengali cinema of this early golden period. The film has broad similarities in plot with the 1942 Hollywood flick Random Harvest.