Don Plascencio has a collection of men he uses like radio stations: in a routine aural examination each man plays a different musical piece instead of the usual heartbeat.
Production companies：
UNAM
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Centro Universitario de Estudios Cinematográficos (CUEC)
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Overview：Don Plascencio has a collection of men he uses like radio stations: in a routine aural examination each man plays a different musical piece instead of the usual heartbeat.
