This totally spontaneous short features a rousing jazz band’s performance at the Central Park Dance Hall in New York City in 1954. Clarinetist Pee Wee Russell, trumpeter Jimmy McPartland, pianist Willie “The Lion” Smith, and others perform as the audience lets loose with exuberance. Filming with a hand-held spring-driven 35mm Eymos, Richard Leacock found himself inside the action. “Being there” would from then on take precedence over the desire to create truth.