A joke book from 1940, and this has got to be the best of them. .. The next joke: Mozart, who was a pupil of Haydn's, once made a bet with the master that he could compose a piece that Haydn could not play. Within five minutes  A joke book from 1940 and this has got to be the best of them The next joke: Mozart who was a pupil Haydn's once made bet with master that he could compose piece Haydn not play Within five minutes