Greedy for international success, a concert pianist sells his soul to the devil in this Mexican horror film. The musician makes a deal with Satan, unaware that the cursed pact will transform him into a bloodthirsty monster whenever he plays his masterpiece. The body count rises, and a packed concert house sets the stage for the tortured pianist's most unforgettable performance. Enrique Rambal, Abel Salazar and Martha Roth star.