It pays homage (and I want you to read that in a faux French "ommage" way) to the operas of Richard Wagner, it pays tribute to Der Ring des Nibelungen, it was the first cartoon short to be deemed "culturally, historically, or aesthetically significant" by the United States Library of Congress, and it's been rated as the greatest cartoon of all time. It is What's Opera, Doc?, and it is completely insane.
Consider this your cultural learning for the day.