Biswas , Shankar-Jaikishan , Naushad , S. D. Burman , C. Ramchandra , Hemant Kumar , Salil Chowdhury , Khayyam , Ravi , Sajjad Hussain, Roshan , Kalyanji-Anandji , Vasant Desai, Sudhir Phadke , Hansraj Behl, and Usha Khanna . (Acclaimed music director, O. P. Nayyar , was an exception, who