Soul music

Staples began singing with her family as a teenager. The Staple Singers started out in gospel, but moved over to pop, eventually playing the '69 Harlem Cultural Festival. Originally broadcast in 1989.

While with Motown, Knight & The Pips turned out a slew of hits, including "I Heard It Through the Grapevine," which they performed at the 1969 Harlem Cultural Festival. Originally broadcast in 1996.