Biography of the famous Italian violinist Nicola Paganini which focuses as much on the musician's romances as it does on his craft. Phyllis Calvert plays Jeanne de Vermond, the aristocratic French woman who captures Paganini's heart, and real-life violin virtuoso Yehudi Menuhin supplies the breathtaking Paganini solos.
| Actor | Role |
|---|---|
 Stewart GrangerNicolo Paganini | Nicolo Paganini |
 Phyllis CalvertJeanne | Jeanne |
 Jean KentBianchi | Bianchi |
 Cecil ParkerLuigi Germi | Luigi Germi |
 Dennis PricePaul de la Rochelle | Paul de la Rochelle |
 Marie LohrCountess de Vermond | Countess de Vermond |
 Felix AylmerNot listed | Not listed |
 Frank CellierNot listed | Not listed |
 Henry EdwardsNot listed | Not listed |
 Mary JerroldNot listed | Not listed |
 Betty WarrenNot listed | Not listed |
| AAnthony HollesNot listed | Not listed |
 David HorneNot listed | Not listed |
| RRobert SpeaightNot listed | Not listed |
 Charles VictorNot listed | Not listed |
 Eliot MakehamNot listed | Not listed |
 O.B. ClarenceNot listed | Not listed |