| Episode cast overview, first billed only: |
 | Colin Solman | - | Narrator (voice) |
 | Aretha Franklin | - | Herself (archive footage) |
 | Chuck D | - | Himself, musician |
| Gregory Porter | - | Himself, musician |
| Gabriel Roth | - | Himself, musician, producer |
| Brooket T & the MG's | - | Themselves (archive footage) |
 | Otis Redding | - | Himself (archive footage) |
| Sam & Dave | - | Themselves (archive footage) |
 | Brenda Russell | - | Herself, vocalist, composer |
 | Martin Luther King | - | Himself (archive footage) |
 | Martha Reeves | - | Herself, vocalist, Martha & the Vandellas |
 | Lyndon Johnson | - | Himself (archive footage) |
| The Marvelettes | - | Themselves (archive footage) |
 | Nile Rodgers | - | Himself, musician, producer |
 | Martha & The Vandellas | - | Themselves (archive footage) |
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