Geninha and Óscar are a couple who loves music. He's a good songwriter, she sings well. Despite this, their parents hate each other and do not seem willing to allow their marriage, nor the creation of a local radio for them.
| Actor | Role |
|---|---|
 Maria MatosRosa Gonçalves | Rosa Gonçalves |
 António SilvaCipriano Lopes | Cipriano Lopes |
 Maria EugéniaGeninha, a Menina da Rádio | Geninha, a Menina da Rádio |
 Óscar de LemosÓscar | Óscar |
 Curado RibeiroFernando Verdial | Fernando Verdial |
 Teresa CazalTeresa Waldemar | Teresa Waldemar |
 Francisco RibeiroFortunato | Fortunato |
| AAida UltzAidinha Seabra | Aidinha Seabra |
 Maria OlguimMaria do Ó | Maria do Ó |
 Manuel Santos CarvalhoLeitão | Leitão |
 Silvestre AlegrimGuarda Nocturno | Guarda Nocturno |
| VVital dos SantosSales | Sales |
 Emilia D'OliveiraEfigénia | Efigénia |
| LLetícia BrazãoFelisbela | Felisbela |
| MMendonça de CarvalhoDirector da Rádio | Director da Rádio |
| RRegina MontenegroCriada | Criada |
| GGabriel LopesFaria | Faria |
| MMário PedroEditor Musical | Editor Musical |
| ZZequinhaZequinha | Zequinha |
| JJorge AlvesLocutor | Locutor |