8. Impromptu fantasia by Mozart, beginning with a short fugue, "because the Emperor was there" (Vol. II., p. 173), followed by variations on an air from the opera of "Der eingebildete Philosoph" by Paesiello ("Salve Tu, Domine"), and when the thunder of applause obliged him to play again, he chose the air "Unser dummer Pöbel meint," from Gluck's "Pilgrims of Mecca," as a theme for variations. 9. A new rondo, composed for Madame Lange, and performed by her (416 K.). 10. The last movement of the first symphony. {MARRIED LIFE.} (286) This programme makes it evident that the demands on a concert-giver were far greater then than now, and the public were undoubtedly more patient listeners. "What pleased me most," wrote Wolfgang to his father (March 29, 1783), "was the sight of the Emperor, and how pleased he was, and how he applauded me. It is always his custom to send the money for his box to the pay-place before he comes to the theatre; otherwise I might certainly have expected more (than twenty-five ducats), for his delight was beyond all bounds." A short time after Mozart played a concerto at Mdlle. Teyber's concert.[48] Again the rondo was encored, but when he sat down to the piano again, he had the desk removed in order to improvise. "This little surprise delighted the audience immensely; they clapped, and cried 'Bravo, bravissimo!'" The Emperor did not leave this concert until Mozart had quite finished playing. So the latter in high glee informs his father (April 12,1783). In Lent, 1784,[49] besides a concert in the theatre, which took place in April, Mozart proposed to give six subscription concerts, and he begs his father to send him the score of "Idomeneo," because he intended to produce it (December 6, 1783). The pianoforte teacher Richter had established Saturday concerts, which were attended by the nobility only upon the understanding that Mozart was to play; after playing at three of them he raised subscriptions (six florins) for three concerts of his own, which took place on the three last Wednesdays in Lent (March 17, 24, and 31), in a fine hall belonging to Trattnern, a bookseller.[50] The list of subscribers {LENTEN CONCERTS, 1784.} (287) numbered 174 names,[51] thirty more than were procured by the partners, Richter and Fischer; the latter was a violin-player, married to Storace, the singer.[52].