After fulfilling his engagement in Brussels, Richter returned to Triebschen, near Lucerne, where he found Wagner just finishing that colossal work, the "Ring of the Nibelung." It seems almost incredible that in addition to their gigantic labours in bringing what was almost a new art into existence, these remarkable men should have found means at this period of devoting much time to the study of Beethoven's string quartets. Richter took part regularly in the quartet playing, and he considers these hours during which he was initiated by Wagner into the deepest mysteries of Beethoven's art among the most valuable of his experiences. In the same year, 1870, Wagner finished his "Siegfried Idyll," a lovely _aubade_ that was written in honour of his infant son's birthday. Richter had been entrusted with the task of getting together a small orchestra in Lucerne, and of rehearsing the new work with them. On the appointed day the musicians assembled on the steps of the villa at Triebschen and performed the piece under Richter's direction to the delight of the Wagner household, among whom the "Siegfried Idyll" is generally known as the "Treppenmusik" (from "Treppe," a stair or flight of steps). The following year Richter accepted an invitation to Buda-Pesth, and there he remained until, in 1875, he was appointed conductor at the Imperial Opera in Vienna, a post that he still (in 1897) holds. Thus the Austrian Capital became for the second time his home and the centre of his activity, and, indeed, those who know him well, know that in spite of all cosmopolitan experiences, Richter is "ein echter Wiener"--a true child of Vienna. The next "labour of Hercules" was the bringing out of Wagner's trilogy, the "Ring of the "Nibelungs" with which the Bayreuth theatre was inaugurated in 1876. During the rehearsals Wagner sat on the stage directing the actors and Richter stood at the conductor's desk. Now that the work has become familiar we have lost all standard for estimating the task which Richter undertook and once more carried through to a brilliantly successful conclusion. That vast scene which occupies four evenings in performance he seemed to have at his fingers' ends. Such was the impression made by Richter upon all who were concerned, either actively, or merely as spectators and listeners, in the inaugural Festival of 1876 at Bayreuth that they recognised him as a new phenomenon in the world of art. The period of modern orchestral conducting may be said to date from that occasion. It was then brought home to everyone that conducting was a great art worthy of independent cultivation. The public began to take an interest in the style of different conductors, and to show some sensitiveness as regards interpretations of the great masters. The era of the "Pig-tails" had come to an end.