Mercedes Sosa making of her last album depicts encounters with other characters, creative moments, testimonies of the artists who participated and reflections of Mercedes Sosa about her life and the recording of "Cantora".
| Actor | Role |
|---|---|
 Mercedes SosaHerself | Herself |
 Gustavo CeratiHimself | Himself |
| JJoan Manuel SerratHimself | Himself |
 Luis Alberto SpinettaHimself | Himself |
 ShakiraHerself | Herself |
 Diego TorresHimself | Himself |
 Soledad PastoruttiHerself | Herself |