As naked flower children romp, the New York freeway is closed because of traffic congestion. Music lovers leave their cars and travel on foot only survive torrential downpours of rain, food shortages and non-stop music. Jefferson Airplane gives the wake up call with their song "Volunteers Of America." Crosby, Stills and Nash deliver a memorable performance. John Sebastian gives an impromptu set with a borrowed guitar from Tim Hardin. Santana, Sly and The Family Stone, Sha-Na-Na, Arlo Guthrie, Richie Havens and Joan Baez also appear. The movie did big box office business and a successful three record set sold millions of copies. The Grateful Dead, Credence Clearwater Revival and Janis Joplin performed but were not shown in the film. The Dead's Jerry Garcia recalled that it was the worst live show the band ever did, ironic for a band known for their spirited live performances.