In this new film from Arena, a cast of musical experts and admirers uncover the truth about the Maria Callas myth and the gift of her extraordinary voice.
| Actor | Role |
|---|---|
 Maria CallasSelf | Self |
| EElvira de HidalgoSelf (archive footage/photos) | Self (archive footage/photos) |
 Robert RinderSelf | Self |
| AAristotle OnassisSelf (archive footage) | Self (archive footage) |
 Grace KellySelf (archive photo) | Self (archive photo) |
| CCarlo Maria GiuliniSelf (archive footage) | Self (archive footage) |
 Marlene DietrichSelf (archive photo) | Self (archive photo) |