Choreographer Michele Rizzo Reveals the Ecstasy and Unredeemed Power of the Nightclub

4/4, a siren calls. We wait. Slow-steady, young ravers descend upon the lobby: from the left, then the right, then behind. Clad in second-hand sports brands, well-worn workwear and sundry leatherettes, they serve the leftovers of last night's looks. Yet their movements are introverted, their gazes downcast.