On a rooftop beside Gulshan lake, above the bells of tuk tuks and sounds of the call to prayer, a group of musicians have gathered in the late afternoon in Dhaka. Baby Dewan sings Bhatiyali songs of the lonely boatmen who ply the waters here for a living and Baul musician Rob Fakir shares the mystical music and philosophy of one of the legendary Bauls of Bangladesh, Lalon Shah.