these, eighteen are thematically catalogued,[10010] and one in G major is by mistake attributed to Wolfgang, and printed in score. Very curious are the "Occasional Pieces" which are characteristic of the times, in their odd instrumental effects, and somewhat heavy touches of fun. Among these are a pastoral symphony with shepherds' horns and two obbligato flutes; a military piece with trumpets, drums, kettle-drums, and fifes; a Turkish and a Chinese piece; a pastoral, representing a rural wedding, and introducing lyres, bagpipes, and dulcimers; during the march, after each huzza, there was a pistol-shot, after the custom of rural weddings, and L. Mozart directed that whoever could whistle well on his fingers, was to whistle during the huzzas. But the musical "Sledge Drive" seems to have gained most applause; a pianoforte arrangement was afterwards printed, the effect being heightened by the accompaniment of five differently toned harness-bells. The following programme was printed by L. Mozart, for a performance of the Collegium Musicum in Augsburg, December 29, 1755:-- MUSICAL SLEDGE DRIVE. Introduced by a prelude, consisting of a pleasing andante and a splendid allegro. Then follows: A prelude, with trumpets and drums. After this: The Sledge Drive, with the sledge-bells and all the other instruments. After the Sledge Drive: The horses are heard rattling their harness. And then: The trumpets and drums alternate agreeably with the oboes, French horns, and bassoons, the first representing the cavalcade, the second the march. After this: The trumpets and drums have another prelude, and The Sledge Drive begins again, but stops suddenly, for all the party dismount, and enter the ball-room. Then comes an adagio, representing the ladies trembling with cold. {L. MOZART'S COMPOSITIONS.} (11) The ball is opened with a minuet and trio. The company endeavour to warm themselves by country-dances. Then follows the departure, and, finally: During a flourish of trumpets and drums, the whole party mount their sledges and drive homewards. In consequence of the performance of these occasional pieces in Augsburg, L. Mozart received the following anonymous letter: "Monsieur et très cher ami! "May it please you to compose no more absurdities, such as Chinese and Turkish music, sledge drives, and peasant weddings, for they reflect more shame and contempt on you than honour, which is regretted by the individual who herewith warns you and remains, "Your sincere Friend. "Datum in domo verae amicitice."