From the movie Azhiyadha Kolangal, a personal favourite [Music: Salil Chowdhury; Singers: P. Jayachandran and P. Susheela]. A video is available, but its audio is sad. You can listen to a much better version (click on AB3).
That last link takes you to The World of Salil Chowdhury, a true labour of love by a devoted fan, Gautam Chowdhury. The site has extensive cross-references to other versions of Salil's compositions; among the four variants -- Malayalam (1977), Tamil (1979), Bengali (1980)and Hindi (1989) -- the best is the Hindi version (click on AB3).