Over here they used Mozart's Musical Joke as the theme tune for the Horse Of The Year show. So everybody knows it, and they managed to fuse two jokes into one...

If you know where to listen, there are lots of jokes in Beethoven's music. A prime example is the second movement of the eighth symphony, which is a friendly pisstake on Maelzel's new invention, the metronome. The Diabelli Variations (in my opinion the greatest work ever composed for keyboard) contains quite a few hidden jibes aimed at Anton Diabelli. He probably didn't mind at all.