Through interviews and performance clips, filmmaker Henry Chalfant explores the history of music in the South Bronx, from the Puerto Rican and Cuban influences that created the local salsa sound to the rise of hip-hop after fires destroyed the area. Artists appearing in this colorful documentary include Eddie Palmieri, Angel Rodríguez, Benny Bonilla, Clemente "Kid Freeze" Moreno, Ray Barretto, Willie Colón, Bobby Sanabria and many others.