At school, a music teacher is testing the pupil's ability to sing. The 16-year old Inga Danell starts to sing a song so catchy that everybody in the classroom starts to sing. The singing is interrupted by the principal, who thinks that jazz and swing dancing is awful. Inga then starts performing at a nightclub, where her music teacher happens to be the pianist.
| role | name |
|---|---|
| Musiklärare 'Susen' Bergman | Adolf Jahr |
| Inga Danell | Alice Babs |
| Fröken Lena Larsson | Solveig Hedengran |
| Rektorn William Löfbeck | Carl Hagman |
| Rektorskan Agda Löfbeck | Viran Rydkvist |
| Karl-Otto Löfbeck | Thor Modéen |
| Vaktmästare Gustafsson | John Botvid |
| Franskläraren Furubeck | Georg Funkquist |
| Fru Danell | Linnéa Hillberg |
| Fröken Jonsson | Julia Cæsar |
| role | name |
|---|---|
| Director | Schamyl Bauman |
| Writer | Hasse Ekman |
| Composer | Sten Axelsson |
| Composer | Eskil Eckert-Lundin |
| Composer | Thore Ehrling |
| Composer | Kai Gullmar |
| Editor | Rolf Husberg |
| Production designer | Arthur Spjuth |
