 In the 1970s, he cut a disc of two Bengali modern numbers "Tomar Chokher Kajole" and "Jay Jay Din", both composed by Salil Choudhury.In 1975, Biswajit produced and directed his own film, "Kahte Hai Mujhko Raja".The film besides him starred Dharmendra, Hema Malini, Shatrughan Sinha, and Rekha.