[Footnote 20021: He was particularly proud of the Empress's notice. When they were encouraging him to play at a small German court, where there were to be some persons of high rank, he answered that he had played before the Empress, and was not at all afraid.] [Footnote 20022: L. Mozart made a list "a page long" of the persons of rank and distinction with whom they had come in contact.] [Footnote 20023: Hiller's Wöchentl. Nachr., I., p. 135. Schubart's Aesthetik, p. 230, Junker's Zwanzig Componisten, p. 89. He died from eating poisonous mushrooms in 1767 (Goethe's Briefe an Leipziger Freunde, p. 242).] [Footnote 20024: Suard gives the following notice (Mél. de Litt., II., p. 337): Il avait 6 à 7 ans. Je l'ai entendu jouer du clavecin au Concert Spirituel et dans des maisons particulières. Il étonnait tous les amateurs par sa facilité et la précision avec laquelle il exécutait les pièces les plus difficiles. Il accompagnait sur la partition à la première vue. Il préludait sur son instrument et dans des capricci improvisés, il laissait échapper les traits du chant les plus heureux et montrait déjà un sentiment profond de l'harmonie.] [Footnote 20025: Mme. du Deffand, Lettres, I., p. 207.] [Footnote 20026: Compare with this what Burney (Reise, I., pp. 12,16) says on the same side in 1770 upon French contemporary music in relation to Italian.] [Footnote 20027: Cf. Schubart's Aesthetik, p. 270.] [Footnote 20028: The most authentic account is given by F. Pohl, Mozart und Haydn in London. Vienna, 1867.] [Footnote 20029: Griesinger's Biogr. Notizen über Haydn, p. 57.] [Footnote 20030: Parke's Mus. Mem., I., p. 347. Reichardt's Mus. Aim., 1796.] [Footnote 20031: A. M. Z., II., p. 301.] [Footnote 20032: The sonatas were advertised as for sale on March 20, 1765.] [Footnote 20033: Metastasio's Opp. post., II., p., 272.] [Footnote 20034: Burney's History of Music, IV., p. 485. Kelly's Reminiscences, I., p. 7.] [Footnote 20035: Europ. Zeitg., 1765, No. 63, Aug. 6.] [Footnote 20036: Burney, Reise, II., p. 104.] [Footnote 20037: Philosophical Transactions, 1770, Volf XL.; repeated in Barrington's Miscellanies on Various Subjects (London, 1781), p. 279.] [Footnote 20038: F. Pohl (A. M. Z., 1863, p. 853).] [Footnote 20039: The letter of thanks runs as follow: July 19, 1765. Sir,--I am ordered by the standing committee of the trustees of the British Museum to signify to you, that they have received the present of the musical performances of your very ingenious son, which you were pleased to make them, and to return you their thanks for the same.--M. Maty, Secretary.] [Footnote 20040: Hoffmann von Fallersleben, Horæ belgico, II., p. 96.] [Footnote 20041: Grenzboten, 1864, III., p. 128.] [Footnote 20042: Mattheson, Mithridat, p. 12, published in Weimar. Jahrb., IV., p. 162.] [Footnote 20043: The identical compositions are said to have been lately discovered in Paris.]