Shehnai maestro Ustad Bismillah Khan passed away due to a heart attack in Varanasi early morning on Monday. He was 91. Khan, who was hospitalised and put on intravenous drip after a brief illness, breathed his last at 3.30 in the morning. He had been admitted to the Heritage Hospital in the city on Thursday after his health reportedly started deteriorating following illness. Born on March 21, 1916, Khan was awarded the Bharat Ratna in 2001. He was also honoured with the Sangeet Natak Academi Award, the Tansen Award and the prestigious Padma Vibhushan.