Ghazal maestro Jagjit Singh has undergone heart surgery at the Escorts hospital, a doctor said Saturday.

According to sources at the Escorts Heart Institute and Research Centre, the singer came to the hospital earlier this week with chest pain.

“He has undergone surgery and is recovering fast,” a senior doctor said. Doctors declined to divulge details.

The 66-year-old singer, who has been ailing on and off for a few months, was admitted to the Intensive Care Unit of the Bombay Hospital in Mumbai in October.