From comments on YouTube realized that the song is over 50 years old. It was played in Mood Indigo just a few years after its release. Nandan Nilekani was the General Secretary who arranged Ashaji and RD Burman’s visit. Sorry there was no Helen that night, who added her charm to the song on YouTube.
Most artists like Hemant Kumar, Manna De, who came during those years, came for their full programs. RD Murman and Ashaji came just for that song. They came by taxi, and left after they performed this song – twice on public demand.
After seeing Helen performing, I wondered if we discriminated against her. She could be a heroine in movies.