To help out his exact double, George Formby (in a dual role) takes the place of a noted South American tenor. This way he can help the opera star fulfill contract obligations and also win the heart of the man's lovely press agent, Linden Travers.
| Actor | Role |
|---|---|
 George FormbyGeorge Butters / Gilli Vanetti | George Butters / Gilli Vanetti |
 Linden TraversCarole Dean | Carole Dean |
 Enid Stamp-TaylorFrances Martinique | Frances Martinique |
| JJacques BrownEnrico Richardo | Enrico Richardo |
 Felix AylmerMr. Appleby | Mr. Appleby |
 Ronald ShinerSwifty | Swifty |
| AAlf GoddardSlappy | Slappy |
 Gus McNaughtonGeorge White | George White |
 Mavis VilliersMts. Durrant | Mts. Durrant |
 Herbert LomasMr. Butters | Mr. Butters |
| EEric ClaveringMr. Durrant | Mr. Durrant |
 Cameron HallMuriel George | Muriel George |
 Beatrice VarleyMrs Butters | Mrs Butters |