The story of two friends who met on the eve of their fiftieth birthday: musician Astor Piazzolla and architect José Pons. They never imagined that their friendship would change their lives forever.
| Actor | Role |
|---|---|
 Boy OlmiJosé Pons (voice) | José Pons (voice) |
 Iván SteinhardtAstor Piazzolla (voice) | Astor Piazzolla (voice) |
| JJacqueline PonsSelf (archive footage) | Self (archive footage) |
| HHoracio FerrerSelf (archive footage) | Self (archive footage) |
 JairoSelf (archive footage) | Self (archive footage) |
| AAmelita BaltarSelf (archive footage) | Self (archive footage) |
 Atahualpa YupanquiSelf (archive footage) | Self (archive footage) |
 Mercedes SosaSelf (archive footage) | Self (archive footage) |
 Astor PiazzollaSelf (archive footage) | Self (archive footage) |
| JJosé PonsSelf (archive footage) | Self (archive footage) |