The artist David Hammons once said, "The less I do the more of an artist I am." His latest exhibition "Concerto in Black and Blue" lives up to that statement. Hammons filled 10,000 square feet of New York's Ace Gallery with . . . nothing. He simply turned off the lights, sealed it off, and let people in with tiny, blue L-E-D flashlights. We followed one group as it navigated through the pitch-black rooms. Produced by Ave Carrillo.