Every Thursday, a group of professionals from Guruvar Mandal (‘Thursday Group’ in Hindi) gathers on the first floor of a house in New Nallakunta, Hyderabad. The weekly baithak begins at 9pm with the traditional invocation, Jai Jagadish Hare, before giving way to a two-hour Hindustani classical recital. IT professional Neha Kashikar Shailendra opens the evening…