How did Leopold Stokowski adapt Bach’s Toccata and Fugue in D Minor for Disney’s Fantasia?

For the 1940 Disney film Fantasia, conductor Leopold Stokowski adapted Johann Sebastian Bach’s Toccata and Fugue in D Minor, BWV 565 by transcribing the original organ composition for a full orchestra.

Stokowski was well-known for his willingness to experiment with the orchestration of the music he performed, often altering the original instrumentation to achieve the rich sonorities characteristic of his conducting style. By moving the piece from the solo organ to the orchestral medium, he transformed the work's majestic sound and dramatic authority for the film's opening sequence.12