Filmed on location at the Family Dog Ballroom in San Francisco in September, 1970, the show captures the heyday and diversity of the San Francisco sound with three of the most well known bands to emerge from the scene: Santana, who would release their second album at the end of 1970; The Grateful Dead, including original band member Ron Pigpen McKernan, who were making a name for themselves with their jam-filled performances; and Jefferson Airplane, who were at the time the biggest of the bands from the area.