A failed pianist sells his soul to the devil in return for his becoming the greatest musician in the world. The catch: every time he plays he turns into a horrible monster.
| Directing | Rafael Baledón | Director |
| Editing | Sigfrido García | Assistant Editor |
| Sound | Reynaldo P. Portillo | Sound Editor |
| Crew | Juan Muñoz Ravelo | Special Effects |
| Sound | James L. Fields | Sound Director |
| Costume & Make-Up | Armando Mayer | Makeup Department Head |
| Camera | Cirilo Rodríguez | Camera Operator |
| Sound | Galdino R. Samperio | Sound Mixer |
| Production | Alfredo Salazar | Production Manager |
| Crew | Manuel Topete | Sound Recordist |
| Sound | Gustavo César Carrión | Music Director |
| Directing | Felipe Palomino | Assistant Director |
| Writing | Alfredo Salazar | Screenplay |
| Lighting | Carlos Nájera | Lighting Supervisor |
| Production | Paul Castelain | Production Supervisor |
| Camera | Mario Diver | Camera Intern |
| Crew | Nicolás Rueda Jr. | Title Graphics |
| Editing | Carlos Savage | Editor |
| Writing | Raúl Zenteno | Screenstory |
| Production | Abel Salazar | Producer |
| Art | Javier Torres Torija | Set Designer |
| Camera | Raúl Martínez Solares | Director of Photography |
| Directing | Pablo Álvarez Rubio | Script Coordinator |
| Sound | María Teresa Rodríguez | Musician |
