Rock legend Tom Petty appeared in an episode of The Simpsons with other rock stars, and it was much easier to get him than ...

and learn the songs in addition to the labor-intensive work that goes into making a traditional, music-less animated episode of television? (And lest we forget: “The Simpsons” is still ...

And, of course, there is commercial work, like this new theme song for “The Simpsons Funday Football." Rona says that mashing up these two pieces of music didn’t seem like a natural at first ...