"Birthday Greetings to Amit Kumar Ganguly. Carried him in my arms when he was a baby. Remember Kishoreda's happiness at that time," tweeted Asha.
Amit, also a singer, turned 61 Wednesday.
Together, Kishore Kumar and Asha had sung evergreen songs like "Haal kaisa hai janaab ka", "Lekar hum deewana dil" and "Ek main aur ek tu".