This documentary examines the enigma and the woman behind this aural assault on the public. Taking on the challenge of portraying the flamboyant ‘queen of dissonance’ is opera superstar Joyce DiDonato making her cinematic debut. The casting of a great opera singer in the title role makes it possible for the film to contrast two different musical worlds: the music Florence Foster Jenkins wanted to hear and claimed to make, melodious and masterful, and the reality of the sounds she subjected her audience to.