Goofs

In the third part of the movie, a Citroën 2cv Charleston gray-black is parked in the background. The car was first presented on the Paris Carshow in 1980, 3 years after La Callas death..

It is stated that Maria had her first leading role in Venice in 1949, playing the role of Elvira in "I puritani". Actually, it was in Athens in 1942, the part of Marta in "Tiefland".

Maria keeps her medication in plastic pill boxes with a transparent orange body and an opaque white cap. While those pillboxes are ubiquitous in the United States, they've never been available in France.

A recording device is brought to Maria in a plastic bag. Plastic bags weren't in common use until the mid-1980s, and would not be used here.

When Maria is being driven back from the cafe by Ferruccio, the car is seen crossing the Place Vendôme. The square is in its current configuration which was redone in 2020, mostly designed for pedestrian use. In the 1970s, it was configured with larger ways for cars and numerous parking spaces.

While the subway cars passing on top of the Passy/Bir Hakeim bridge in Paris are the correct model for the time, their color scheme is wrong. They are painted the current scheme for the Paris transport authority which is white with a large blue/green stripe. In the 70s, they were painted royal blue with a large white stripe and two smaller yellow stripes.

When Angelina Jolie is lip-syncing to María Callas' original recordings throughout the film, her mouth movements are out of sync with the audio.