Cast
- José Moreno as Puck
- Ramón Alonso as Roberto (singing voice)
- Tomás Blanco as Amante de Cecilia
- Víctor Blas
- Carlos Casaravilla as Roberto
- Josefina Cubeiro as Lina (singing voice)
- Antonio Durán as Juanito
- Julio Goróstegui as Empresario del teatro
- Roberto Martín as Artista de la compañía
- Manuel Miranda as Boby