Florence Foster Jenkins unexpectedly gains a cult following. Her recordings outsell many modern artists. Opera star Joyce DiDonato's performance contrasts Jenkins' dissonant singing, emphasizing the film's delusion vs. reality theme.

Florence Foster Jenkins is known as "the worst singer of all times" and yet she is a cult figure whose recordings still outsell many contemporary singers. Opera superstar Joyce DiDonato interprets the flamboyant "queen of dissonance". The involvement of the celebrated virtuoso makes it possible to contrast two different musical perspectives and gives viewers a vivid impression of the film's key conflict between inner delusion and external reality.