This song is from the movie "Kumara Vijayam" starring Jayachitra and Kamal Hassan. The song has been rendered by K J Yesudas and Vani Jairam. The movie was released in 1976 by Sri Murugalaya and directed by A Jegannathan. The music is by G Devarajan and the lyrics by Kannadasan.Pulamaipithan and Poovai Senguttuvan are the other lyricists for the movie.This movie was once telecast on DoorDarshan maybe some 25 or 30 years back. But now nobody seems to have the print of this movie. I hope some of the tamil channels gets hold of this movie and telecasts it soon. A nice and watchable movie.