This is actually an Italian animated film from 1977 that I stumbled upon on YouTube a few months ago. The whoile fim is essentially a parody of Disney's Fantasia made by animator Bruno Bozzetto. I personally felt this movie (when it comes to individual style and humor) is the superier one of the two. It's amazing that this one animator can have so many styles in this film versus the 7 or eight directors of Fantasia. There are six movements in the film altogether, one of which will make it in Fantasia 2000 almost 30 years later.
The segment I want to show you is my favorite part of the film. When Maurice Ravel wrote Bolero, it instantly became a classic. (Not bad considering he had narcolepsy when he wrote it.)
What Bozzetto does here is something that's a direct parody of The Rite of Spring in Fantasia. Here, a black blob from a Coke bottle evolves into many fantastic creatures and are on a continuous march for survival. Wait... why am I doing all the talking? Watch it for yourself here!