- The "Millionairess" and "Most Promising Actress" as addressed in the concert scene are none other than Madame von Meck and Alma Mahler from Ken Russell's previous films Music Lovers, The (1970) and Mahler (1974).
- First film to be encoded with a Dolby Stereo optical soundtrack.
- When Liszt (Roger Daltrey) changes into a dress at Carolyne's command, he changes behind a screen with a painting of royalty. The man in the painting is Pete Townshend, from the rock band The Who, of which Daltrey is the lead singer.
- the man who seals the door of the "fumigation" room at Carolyne's palace.
- The flames of Liszt's piano turn Wagner's sword into a snake.
- The "lasers blasts" which destroy Wagner / Adolf Hitler at the end of the film.
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