Singh briefly taught history and joined the
Indian Railway Traffic Service in 1962, where he worked for 21 years. In addition to his films, Singh produced over sixty documentaries for film and television with a large number of films on painters and painting. In November 2008, his landmark book on the painter M.F. Husain called MAQBOOL FIDA HUSAIN was published. It reviews the artist's work from 1947 to 2007. This has been hailed as a definitive book on the work of M.F. Husain to date and a major contribution to the writing on contemporary Indian art by people like E. Alkazi, Yashodhara Dalmia (Outlook),
Gayatri Sinha (Asian Age), Aveek Sen (The Telegraph), Chitrapu Uday Bhaskar (The Hindu), Kishore Singh (Business Standard) and M.F. Husain himself. He wrote a fortnightly column on life, society and the arts called BIMB PRATIBIMB in the reputed Hindi daily JANSATTA from 2001 to 2009. Two books of his articles in this column called ‘Kuchh Gamein Dauran’ and ‘Aur Bhi Gham Hain’ have been published. ‘Kuchh Gamein Dauran’ had won Sahityik Kriti Sammaan of Delhi Hindi Academy in 2005. Since early 2008, he has also written a column on arts, culture, literature and cinema in major Hindi daily Hindustan under PARTEIN. A collection of his articles in Hindustan has been published in book form called "Baaki Samay". ==Personal life==