Sophie and Elis, two young women at the Conservatory of Vienna. vie for the affection of head singing teacher Walter.
| Actor | Role |
|---|---|
 Jean MaraisEric Walter | Eric Walter |
 Brigitte BardotSophie Dimater | Sophie Dimater |
| IIsabelle PiaElis Petersen | Elis Petersen |
 Yves RobertClément | Clément |
 Mischa AuerBerger | Berger |
 Lila KedrovaMrs. Dimater, Sophie's mother | Mrs. Dimater, Sophie's mother |
 Mylène DemongeotThe future star who vocalizes | The future star who vocalizes |
 Edmond BeauchampMr. Petersen, Elis's father | Mr. Petersen, Elis's father |
 Denise NoëlMarie Koukawska-Walter | Marie Koukawska-Walter |
 Yvette EtiévantMrs. Petersen, Elis's mother | Mrs. Petersen, Elis's mother |
 George ReichDick Killian | Dick Killian |
 Anne ColletteMarion Dimater | Marion Dimater |
| OOdile RodinErica | Erica |
 Daniel EmilforkViolin teacher | Violin teacher |
 Jean WienerPiano Teacher (uncredited) | Piano Teacher (uncredited) |
| LLéon DaubrelProfessor | Professor |
 Guy BedosRudy | Rudy |