In 2013, when 28-year-old Rafi Khan was waiting at the Srinagar International Airport to board a flight to Mumbai, he remembers feeling both excitement and dread. "I couldn't ignore the knot in my tummy, because I was leaving home and travelling thousands of kilometres to a city, where I knew nobody, simply on the assurance of a lady I had met a few days ago," says the vocalist, who hails from Batamaloo, Srinagar.