It was about two years ago, at the Albert Hall London, I'm from London. It was Broadway, the golden age of musicality as Seth said. I was totally enthralled for two hours, this was just a tiny part of it, Sierra Boggess sang "The lusty month of May" and this wonderful couple sang "Bess you is my woman now" from Porgy and Bess. As I said it was mesmerizing. I wonder if theres any more on Youtube?