The Mad Maestro 1939 MGM Cartoon The maestro is conducting his orchestra of assorted animals

"The Mad Maestro" is an MGM cartoon made just before the studio began making great cartoons, such as Tom & Jerry. After leaving Looney Tunes a few years before, the Harmon-Ising team moved over to MGM and there they made films nearly as insipid and useless as the stuff they'd been making for Warner Brothers/Looney Tunes.