Delhi Gharana exponent Ustad Iqbal Ahmed Khan passed away on Thursday morning following a cardiac arrest, a family member said. A custodian of the Delhi gharana, Ustad Iqbal Ahmed Khan was best known for his versatile renditions in various genres of Indian classical music, including ’thumri’, ‘dadra’, as well as ‘bhajans’ and ‘ghazals’. Posting a photograph of the artiste, he …