The sun was soft gold over a teeming park in Kankurgachi, North-East Kolkata, early 1980s, but to galloping fitness freaks, vegetable‑laden housewives, wandering loafers, fish‑loving babus with bags of silver‑scaled Hilsa, and children skipping along, the heart of the day was held in a mystical man’s hypnotic melody. Baburam sat cross‑legged on a frayed grass…