Sharing this entertaining Lata-Kishore song, ripped from the Odeon reissue LP.
As far as I know, Kishore Kumar sang only two songs for Rajendra Kumar - this duet from Aap Aye Bahaar Ayee and the duet "hello kya haal hai" from Sunehra Sansaar. The latter was not included in the movie, but was published on an EP record.
Music: Laxmikant Pyarelal
Lyrics: Anand Bakshi
Year: 1971