India, Aug. 28 -- Mumbai isn't just known as the city that does not sleep for show. It's because on any given weeknight, Mumbai hums like a reel looped on repeat, cabs nosing into South Bombay lanes, a bassline skimming the sea at Carters Road, and the thump of music from the city's hippest spots. The city's nightlife has always balanced old money and the latest cool scenes. Right now, it's more thrillingly diverse than ever. Imagine a rooftop martini before the monsoon, a warehouse rap cypher in Khar, or a chef's menu that slides into a DJ's 1 a.m. set. Mumbai never stops eating or reinventing itself. After dark, it's doing both-with better lighting and louder speakers. In this evolving space of recreation and raves, some places are pure...