Angelina Jolie stars as soprano Maria Callas in Pablo Larraín's film "Maria," streaming on Netflix. Here's how she prepared and transformed her voice.

Angelina Jolie really is singing opera in Maria, but it’s not only Jolie’s voice in the final product. The movie blended Jolie’s singing voice with recordings of the real Maria Callas, so the result is a hybrid of both Jolie and Callas’s voice.

Netflix U.S. has just added a stirring new biopic starring Oscar-winning performer, Angelina Jolie. "Maria" is the latest effort from Pablo Larraín, and continues his recent run of biographical historical dramas looking at iconic women from the 20th century after 2021's "Spencer" and the Natalie Portman-fronted 2016 biopic, "Jackie".