This is a hoot! Someone shared this link on one of the music-related bulletin boards I visit. Actually, it was the film scorer who shared it!
It's well-done 3D animation set to an Italian Opera (with lyrics changed a bit, from what I can tell). Very funny! Very well done! Quite enjoyable!
Just click on the link and the animation will load automatically! You'll need Quicktime (which is available as a free download) to view it.