The B4U Movies channel on television airs songs from old Hindi movies every night around 1 a.m., which often include some from the black and white era, on a show called Tasveerein. Here is one such rare gem that has been on the show more than once. I would like to offer my sincerest apologies, in advance, to those who do not understand Hindi/Urdu. I am sure they, too, can enjoy the music, however.
Film: Ek Raaz (which released in the year 1963)
Singer: Kishore Kumar (on whom the song has been picturised, as well)
Music Director: Chitragupt
Lyricist: Majrooh Sultanpuri