Into the early days of this millennium, T.N. Seshagopalan held a night-long concert in the city of Chennai where he had made it big as a Carnatic musician. Among his accompanists at the historic 12-hour performance on a roadside venue of the down-country metropolis was a teenager, who kept impulsively shaking his head in an uncensored show of admiration for the main artiste’s vocals. Not many in the crowd those days knew the boy was Seshagopalan’s son, T.N.S. Krishna.