Thanx a million to YouTube channel -The Sangeetved where I found this precious video!
This is just the fragment where Lata comes in the programme featuring her sisters Meena & Usha Mangeshkar as well. The song she sings here says, "Come near, O beloved..., the beloved who is more precious than life & as important as God himself! The sweet néctar-like voice of 'Saraswati Maa -Lata Mangeshkar' makes it immortal! God bless her with many many more years of life with sound health!