The film is an unprecedented and exclusive testimonial of Maria Bethânia from director and screenwriter Carlos Jardim, interspersed with rare footage of rehearsals and concerts by the singer throughout her 57-year career. Actress Fernanda Montenegro narrates five texts by authors such as Ferreira Gullar and Caio Fernando Abreu about Bethânia's importance on the Brazilian cultural scene.
| Actor | Role |
|---|---|
 Maria BethâniaSelf | Self |
 Fernanda MontenegroNarrator | Narrator |
 Mariana GrossNarrator | Narrator |
| CCarlos JardimSelf (voice) | Self (voice) |
 Caetano VelosoSelf (archive footage) | Self (archive footage) |
 Gilberto GilSelf (archive footage) | Self (archive footage) |
 Gal CostaSelf (archive footage) | Self (archive footage) |
 Chico BuarqueSelf (archive footage) | Self (archive footage) |