Indian musician and composer Jagjit Singh, who won generations of fans by reviving the traditional genre of "ghazal" tunes, died on Monday in Mumbai at the age of 70, said.
Singh, dubbed "The Ghazal King", had been in intensive care for three weeks after undergoing surgery when he fell seriously ill with a .
Ghazals are a poetic form of singing that originated in the Middle East and spread tofrom the 12th century.
They were traditionally reserved for the elite, but Singh popularised the form in the 1970s and 1980s by pioneering a modern ghazal sound and using Western instruments alongside Indian classical ones.
"Unfortunately, he expired this morning," said, spokesman for the private Lilavati Hospital in Mumbai.
As well as spreading the appeal of ghazal in India, Singh sang and composed for Bollywood, the Hindi-language film industry.
Singh will be best remembered for his music in the films "" (Love Song) in 1981 and "Arth" (Meaning) the following year.
He last sang in the low-budget film "Khushiyaan" (Happiness), which is due in cinemas on Friday.
Jagjit Singh was born to a poor family in the north Indian state of Rajasthan on February 8, 1941.
He took to singing at an early age and like millions of other migrants, travelled to Mumbai, then known as Bombay, to make his fortune.
After initial struggles singing advertising jingles and performing at parties, he found a foothold in regional-language and Bollywood cinema, going on to form a successful duo with his wife Chitra in the 1970s and 80s.