Matt's next cartoon dated from 1932 - Minnie the Moocher, which is a kind of early rock video featuring Betty Boop and Jazz musician Cab Calloway. Calloway was famous for his outrageous dancing, and appears in the cartoon as a dancing ghost bandleader in a night-club full of skeletons. Directed by the Fleischer Brothers, it's an early example of Rotoscoping - where an animator draws over a previously filmed person to make the animation more lifelike.

It was the music that attracted Matt to the cartoon.

'I used to be a rock critic before the cartoon stuff. It's been really fun to get good music on the Simpsons and Futurama. The Beastie Boys were really great, but we could never get them all in the same studio at the same time. In next season's Simpsons we've got some great guest stars.

'Homer signs up for a rock camp - which is like an Athletics camp where you get to play sports alongside your favourite sports stars, but this is for rock music. And we got the Rolling Stones - Keith Richards and Mick Jagger. There's also Tom Petty, Elvis Costello and Lenny Kravitz. We did an episode with the Ramones a while ago, and Fox didn't like it. They wanted us to get the Stones - maybe they didn't know who the Ramones were. But that's why, when they play at Mr. Burns' birthday, he says 'have the Rolling Stones killed'.'