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.

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Main Cast: Enrique Rambal, Martha Roth, Abel Salazar, Ofelia Guilmáin, José Chávez, Maricarmen Vela, Carlos Suárez, Ana Laura Baledón, Armando Guttierez, Cecilia Leger

Director: Rafael Baledón

Writer: Alfredo Salazar

Editor: Carlos Savage

Cinematographer: Raúl Martínez Solares

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