Jagjit Singh, born Jagmohan Singh (8 February 1941 – 10 October 2011), was a prominent Indian Ghazal singer, songwriter and musician. Known as the "Ghazal King", he gained acclaim together with his wife, another renowned Indian ghazal singer Chitra Singh in the 1970s and 1980s. Their combination album comprising music from the films, Arth and Saath Saath is the HMV's largest selling combination album of all time.Sajda (An Offering, 1991), Jagjit Singh's magnum opus double album with Lata Mangeshkar holds the same record in non-film category.
 He sang in numerous languages. He was awarded the Padma Bhushan by the government of India in 2003.

Source:
http://en.wikipedia.org/wiki/Jagjit_Singh