Joselito is a naughty boy that sings like the nightingales. He lives in a little town near Sevilla. He has a great success due to his magnificent voice and then he can practice charity with a girl from his town.
| Camera | Juan Mariné | Director of Photography |
| Writing | Antonio del Amo | Writer |
| Writing | Antonio Guzmán Merino | Writer |
| Art | Eduardo Torre de la Fuente | Production Design |
| Writing | Camilo Murillo | Writer |
| Production | Juan Francisco Blanco Lavín | Producer |
| Writing | Concha R. Castaño | Story |
| Directing | Antonio del Amo | Director |
| Writing | Francisco Naranjo | Writer |
| Editing | Petra de Nieva | Editor |
| Sound | Antonio Valero | Original Music Composer |
| Writing | María Dolores Sánchez Ovín | Story |
| Sound | Miguel García Morcillo | Original Music Composer |
| Production | Cesáreo González | Producer |