* Intellectual Property Rites [sic]

Thief  for the Ages

Leopold Mozart told of Wolfgang's accomplishment in a letter to his wife dated April 14, 1770 (Rome):

"…You have often heard of the famous Miserere in Rome, which is so greatly prized that the performers are forbidden on pain of excommunication to take away a single part of it, copy it or to give it to anyone. But we have it already. Wolfgang has written it down and we would have sent it to Salzburg in this letter, if it were not necessary for us to be there to perform it. But the manner of performance contributes more to its effect than the composition itself. Moreover, as it is one of the secrets of Rome, we do not wish to let it fall into other hands…."

http://www.classical.net/music/comp.lst/works/allegri/miserere.php