A cellist and a pianist, along with the daughter of the owner of a musical home, form a classical trio. A television producer challenges confronting the modern equipment. Accept and so begin a new career in popular music, so despises his former employer, thus limiting the affair between his daughter and one of them.
| Actor | Role |
|---|---|
 Germán ValdésFederico | Federico |
 Luis AguilarPedro | Pedro |
 Yolanda VarelaMinerva | Minerva |
 Julio VillarrealDon Julio | Don Julio |
 Marcelo ChávezSr. Conde | Sr. Conde |
 Paco MalgestoHimself | Himself |
 Manuel ValdésPuppy Lane | Puppy Lane |
| RRicardo AdalidEmpleado de hotel | Empleado de hotel |
 Magda DonatoClienta de don Julio | Clienta de don Julio |
| FFidel Ángel EspinoPepe | Pepe |
| FFrancisco MenesesEmpleado de aduana | Empleado de aduana |
 Mario CidFotógrafo | Fotógrafo |
 Lupe CarrilesBruja de los picachos | Bruja de los picachos |
 Ariadna WelterMaría Mercedes | María Mercedes |
 Víctor Manuel Castro(uncredited) | (uncredited) |