BWV 565 was used as film music well before the sound film era, becoming a cliché to illustrate horror and villainy. Its first uses in sound film included the 1931 film Dr. Jekyll and Mr. Hyde and the 1934 film The Black Cat … [Disney’s 1940 movie] Fantasia contributed significantly to the popularity of the Toccata and Fugue. … The 1950 film Sunset Boulevard used BWV 565 as a joking reference to the horror genre.[114] The piece has appeared in many other films, including 20,000 Leagues Under the Sea (1954), in which it is played by Captain Nemo on the organ of the Nautilus, before the submarine’s pitiless and apparently unmotivated attack on a ship.[117] BWV 565 also appeared in Fellini’s 1960 La Dolce Vita.[123] The 1962 film adaptation of The Phantom of the Opera used BWV 565 in the suspense and horror sense.[116] It is used “without irony and in an apocalyptic spirit updated from its earlier Gothic implications” at the beginning and end of the 1975 dystopian science fiction film Rollerball.[124] … Ennio Morricone took inspiration from the score BWV 565/1 for the 1965 film For a Few Dollars More of Sergio Leone. -wikipedia

This visualization is also enlightening.