A Musical Joke (German: Ein musikalischer Spaß) K. 522, (divertimento for two horns in F, and string quartet) is a composition by Wolfgang Amadeus Mozart; he entered it in his Verzeichnis aller meiner Werke (Catalogue of All My Works) on June 14, 1787. Commentators have opined that the piece's purpose is satirical – that "[its] harmonic and rhythmic gaffes serve to parody the work of incompetent composers"[1] – though Mozart himself is not known to have revealed his actual intentions.
The beginning of the fourth movement is well-known in Britain as the theme tune to the BBC's television coverage of the Horse of the Year Show.[2][3]