On a pleasant and breezy February evening in Mumbai, 88-year-old Zubin Mehta, the globally celebrated Indian conductor and, perhaps, the most famous son of ‘Bombay’, seems far away. He is surrounded by a striking vortex of cellos, heaving violins and a sweet singing harp — being tuned for his rehearsals with the Symphony Orchestra of India (SOI) — the country’s first and only professional Western classical orchestra nurtured by and housed at the ocean-facing National Centre of Performing Arts (NCPA) in Mumbai. We meet him in the green room of Jamshed Bhabha Theatre, not far away from his home —...