One evening, shortly after he had finished composing the soundtrack of the 2014 film PK, Shantanu Moitra was reminiscing about his college days in a chat with Gulzar. "'What is it about those days that you miss the most?' asked Gulzar saab, and my mind went straight to the mountains. For a middle-class Bengali boy in Delhi, trekking was a favourite engagement. I missed the feel of the rucksack on my back," recalls the 49-year-old music composer. "When I answered his question, Gulzar saab asked another, 'What prevents you from going to the mountains?'"

(Front row, from left) Purbayan Chatterjee, Ani Choying Drolma, Shantanu Moitra and Kaushiki Chakrabarty at the Song of the Himalayas presentation