Without that, none of this could happen." When the younger Callas sings songs like "Ave Maria" and "E che? Io son Medea" in the film, the voice is all recordings from the woman herself.

The film opens with Jolie as Callas singing “Ave Maria” from Verdi’s Otello. The voice we hear belongs to Callas but Jolie’s has been mixed in too. We see Callas steer through ups and ...