This is the dance floor of the Hollywood Palladium at 6215 Sunset Boulevard in 1943. On its star-packed opening night, October 31st, 1940, over 6,500 people enjoyed the Tommy Dorsey Orchestra and his lead vocalist, the soon-to-become-legendary Frank Sinatra. But god help you if you and your dance partner should ever be separated. You’ll never see each other again. Ever.