Cast
| James Brown | ... | Self (archive footage) | |
| George Clinton | ... | Self (archive footage) | |
| Marvin Gaye | ... | Self (archive footage) | |
| Al Green | ... | Self (archive footage) | |
| Isaac Hayes | ... | Self - Presenter | |
| Jimi Hendrix | ... | Self (archive footage) | |
| The Isley Brothers | ... | Themselves (archive footage) | |
| Curtis Mayfield | ... | Self (archive footage) | |
 |
Trevor Nelson | ... | Narrator |
| The O'Jays | ... | Themselves (archive footage) | |
| Sly and the Family Stone | ... | Themselves (archive footage) | |
| Stevie Wonder | ... | Self (archive footage) | |