Desc: Oíd mortales: el hombre que entendió el sonido: Directed by Pablo Abate, Mariano Torres. With Augusto Cicaré, Claudio Kleiman, Daniel Melero, Fernando Zuccarelli. Hugo Zuccarelli discovered how hearing works. This is the story of a man who understood sound and by doing so amused such talents as Roger Waters, Paul McCartney and Michael Jackson, by creating holophonics.