Tun Tun was the screen name of Indian playback singer and actress-comedienne, Uma Devi Khatri, who was called "Hindi cinema's first-ever comedienne". In her career spanning five decades, she acted in about 198 films in Hindi/Urdu and other languages like Punjabi etc., pairing with top comedy actors of her times such as Bhagwan Dada, Agha, Sunder, Mukri, Dhumal, Johnny Walker and Keshto Mukherjee. She was last seen in Hindi films in Kasam Dhande Ki (1990).…