DISNEY himself considers "Fantasia" the "big experience" of his life, "It isn't that I deliberately set out to break movie traditions. But if someone didn't break loose with new things the movies wouldn't be where they are to-day!"
[…]
"Fantasia" is composed of eight separate cartoons, which illustrate eight famous compositions played by Leopold Stokowski and the Philadelphia Symphony Orchestra.
You hear nothing but music in "Fantasia". There is no dialogue. There are no sound effects Disney himself insisted upon this feature against violent opposition from his staff.
If a script-writer wanted a character to say "Boo!" he had to hunt in the music for that particular cartoon, until he found a place where the music said "Boo!".
For months Disney's artists struggled to find the perfect action for three certain little notes in Tschaikowsky's. "Nutcracker Suite" Finally, they made a flower-fairy yawn.
The two remaining cartoons illustrate Tschaikowsky's "Nutcracker Suite" by flower, fish, and fairy ballets: a Bach Toccata and Fugue by a series of abstract designs.