Watch Kulicha Kuthalam Video Song from Duet Tamil Movie Songs on Pyramid Music. Duet is a 2001 Tamil romantic musical film written and directed by K. Balachander. Produced under the banner of Kavithalayaa Productions. The film stars Prabhu, Ramesh Aravind, Meenakshi Seshadri, and marks the debut of Prakash Raj in Tamil cinema. AR Rahman scored music for the film. Song: Kulicha Kuthalam...