Continuity mistake: The Phantom's entire face is hit by the tray of acid, yet only the right side of his face gets disfigured.
Continuity mistake: The Phantom's right eye only becomes disfigured once he's unmasked - it's normal the rest of the time.

Directed by: Arthur Lubin
Starring: Claude Rains, Edgar Barrier, Nelson Eddy, Susanna Foster
Continuity mistake: The Phantom's entire face is hit by the tray of acid, yet only the right side of his face gets disfigured.
Continuity mistake: The Phantom's right eye only becomes disfigured once he's unmasked - it's normal the rest of the time.
Continuity mistake: The Phantom's right eye only becomes disfigured once he's unmasked - it's normal the rest of the time.
Trivia: When Claudin thinks his concerto has been stolen, he goes into a frenzy and attacks the music publisher. The publisher's assistant, Georgette, stops the attack by splashing a tray full of powerful etching acid into Claudin's face. Oddly, Claudin does not recoil when she throws the acid; rather, he leans forward, as if to ensure that it the liquid strikes him full in the face. Which is precisely what happened. To avoid having to shoot the messy scene more than once, we see actor Claude Rains deliberately leaning into the splash for a thorough dousing.
Question: Did Claude Rains really play the piano here?
Answer: No, Claude Rains was not a trained musician. He was coached on how to play the violin and piano, but Rains' playing was dubbed over in post-production.
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