Orey naal unai naan, nilaavil paarthadu...
No idea which movie it is, but a brilliantly melodious song, by Ilaiyaraja of course. It's beats are the same as in Being For The Benefit Of Mr.Kite by The Beatles.
I'm dead sure of this because the song by The Beatles was on their best album, Sgt.Pepper's which was released way back in 1967!!