Guru Dutt and Geeta Roy were both great personalities in their own right. But even great personalities do flounder on their personal front. It is a well known fact that Geeta Dutt's career in playback singing was in dire straits when she was offered Anubhav by Kanu Roy.
Geeta Dutt showed great depth in singing all her numbers from the movies. But the pain which comes in her voice when she croons Meri jaan mujhe jaan na kaho meri jaan is to be heard to be believed . A question simply comes to a listener's mind whether all the pain and humiliation she faced in his martial life came to the fore while singing this song written by Gulzar.
Do read the my detailed post which partly explains the circumstances which lead to dipping of her career graph here.