My opinion only.......
It is very important to select the right song for stage shows.
I think Hema's selection of song ( Bachna e hasino) was incorrect choice. Kishore da has sung this song and his voice was very thick with very superior tonal quality.
seasoned.
But R D Burman used Kishore for most of songs, so it is likely that in RD special one will go for Kishore's song.
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