We have seen that in the first years of the 18th century, the Opera at Vienna was chiefly remarkable for its size, and the splendour and magnificence of its scenery. But it soon became a first-rate musical theatre; and it was there, as every one who takes an interest in music knows, that nearly all the masterpieces of Gluck and Mozart[31] were produced. The French sometimes speak of Gluck's great works as if they belonged exclusively to the repertory of their Académie. I have already mentioned that four years before Gluck went to Paris (1774), his _Orfeo_ was played in London. This opera was brought out at Vienna in 1764, when it was performed twenty-eight times in succession. The success of _Alceste_ was still greater; and after its production in 1768, no other opera was played for two years. At this period, the imperial family did not confine the interest they took in the Opera to mere patronage; four Austrian archduchesses, sisters of the Emperor Charles VII., themselves appeared on the stage, and performed, among other pieces, in the _Egeria_ of Metastasio and Hasse, and even in Gluck's works. Charles VII. himself played on the harpsichord and the violoncello; and the Empress mother, then seventy years of age, once said, in conversing with Faustina (Hasse's widow at that time), "I am the oldest dramatic singer in Europe; I made my _début_ when I was five years old." Charles VI. too, Leopold's successor, if not a musician, had, at least, considerable taste in music; and Farinelli informed Dr. Burney that he was much indebted to this sovereign for an admonition he once received from him. The Emperor told the singer that his performance was surprising, and, indeed, prodigious; but that all was unavailing as long as he did not succeed in touching the heart. It would appear that at this time Farinelli's style was wanting in simplicity and expressiveness; but an artist of the intelligence and taste which his correspondence with Metastasio proves him to have possessed, would be sure to correct himself of any such failings the moment his attention was called to them. [Sidenote: SINGERS OF THE EIGHTEENTH CENTURY.]