Interregnum , where Cosima remained in seclusion in the months following Wagner's death Wagner had left neither a will, nor instruction on the management of the Bayreuth Festival after his death. He had written of the future: "I ... cannot think of a single person who could say what I believe needs to be said ... there is practically no one on whose judgement I could rely". The festival's uncertain outlook was aggravated by Cosima's total withdrawal from all contact except that of her daughters and her friend and adviser Adolf von Groß. Without Cosima's participation the 1883 festival, as planned by Wagner—12 performances of
Parsifal—went ahead, with
Emil Scaria (who sang the role of Gurnemanz in the opera) doubling as artistic director. The cast was largely that of 1882, and Levi remained as conductor. At the conclusion of the festival Cosima received a long, critical memorandum from an unknown observer, which highlighted numerous divergences from Wagner's directions. This, says Marek, proved to be a critical factor in determining her future life's mission: the maintenance of Wagner's heritage creations through the preservation of his interpretations. In her seclusion, Cosima learned of an abortive plan masterminded by Julius Kniese, the festival's chorus-master, by which Liszt was to assume the role of music director and Bülow would be chief conductor. Neither Liszt nor Bülow was interested in this arrangement, and the plan died. With Groß's assistance, Cosima pre-empted any further attempts by outsiders to assume control of the Wagner legacy, by obtaining legal recognition of herself and Siegfried as sole heirs to all Wagner's property, physical and
intellectual. By this means she secured an unassailable advantage over any other claim on direction of the festival's future. although Bülow resisted all offers to participate. In the course of her long stewardship Cosima overcame the misgivings of the hardline Wagnerites patrons who believed that Wagner's works should not be entrusted to a non-German. Under her watch the festival moved from an uncertain financial basis into a prosperous business undertaking that brought great riches to the
Wagner family. Although the festival's historian,
Frederic Spotts, suggests that Cosima was more creative than she affected to be, the primary purpose of all her productions was to follow the instructions and reflect the wishes of the Master: "There is nothing left for us here to create, but only to perfect in detail". This policy incurred criticism, among others from
Bernard Shaw, who in 1889 mocked Cosima as the "chief remembrancer". Shaw scorned the idea that Wagner's wishes were best represented by the slavish copying in perpetuity of the performances he had witnessed. Ten years later Shaw highlighted as a feature of the "Bayreuth style" the "intolerably old-fashioned tradition of half rhetorical, half historical-pictorial attitudes and gestures", and the characteristic singing, "sometime tolerable, sometimes abominable". The subordination of the music to text, diction and character portrayal was a specific feature of the Bayreuth style; Cosima, according to Spotts, turned the principle of clear enunciation into "a fetish ... The resulting harsh declamatory style came to be derided as ... the infamous Bayreuth bark".
Parsifal was shown alongside other works at each of Cosima's festivals except for 1896, which was devoted to a revival of the
Ring cycle. In 1886, her first year in charge, she added
Tristan und Isolde to the canon. Amid the bustle of the festival Cosima refused to be distracted by the illness of her father, Liszt, who collapsed after attending a performance of
Tristan and died several days later. Cosima supervised her father's funeral service and burial arrangements, but refused a memorial concert or any overt display of remembrance. According to Liszt's pupil
Felix Weingartner, "Liszt's passing was not of sufficient importance to dim the glory of the Festival, even for a moment".
Die Meistersinger was added in 1888,
Tannhäuser in 1891,
Lohengrin in 1894 and
Der fliegende Holländer in 1901. After the 1894 festival Levi resigned, the years of working in an anti-Semitic ambience having finally had their effect. At the 1896 festival Siegfried made his Bayreuth conducting debut in one of the five
Ring cycles; he remained one of Bayreuth's regular conductors for the remainder of Cosima's tenure. In common with Wagner, Cosima was willing to shelve her anti-Semitic prejudices in the interests of Bayreuth, to the extent of continuing to employ Levi for whom she developed considerable artistic respect. However, she frequently undermined him behind his back in private letters, and allowed her children to mimic and mock him. Cosima expressed to Weingartner the view that "between Aryan and Semite blood there could exist no bond whatever". In accordance with this doctrine, she would not invite
Gustav Mahler (born Jewish though a convert to Catholicism) to conduct at Bayreuth, although she frequently took his advice over artistic matters. Cosima was determined to preserve Bayreuth's exclusive right, acknowledged by Ludwig, to perform
Parsifal. After Ludwig's death in 1886 this right was briefly challenged by his successor, an attempt swiftly defeated by Cosima with the help of Groß. A more serious threat arose from the German copyright laws, which only protected works for 30 years following the creator's death; thus
Parsifal would lose its protection in 1913 regardless of any agreement with the Bavarian court. In anticipation, in 1901 Cosima sought to have the period of copyright protection extended by law to 50 years. She lobbied members of the
Reichstag tirelessly, and was assured by
Kaiser Wilhelm II of his support. These efforts failed to bring about any change in the law. In 1903, taking advantage of the lack of a copyright agreement between the United States and Germany,
Heinrich Conried of the
New York Metropolitan Opera announced that he would stage
Parsifal later that year. Cosima was enraged, and with the assistance of
Gilbert Ray Hawes filed suit against the company. Her efforts were to no avail; the first of 11 performances took place on 24 December 1903. The enterprise was a popular and critical success, though in Cosima's view it was a "rape"; her hostility towards the Metropolitan lasted for the remainder of her life. By the beginning of the new century three of Cosima's daughters had married: Blandina to Count Biagio Gravina in the closing days of the 1882 festival, Daniela to
Henry Thode, an art historian, on 3 July 1886, and Isolde, Cosima's first child by Wagner, who married a young conductor, , on 20 December 1900. The youngest daughter,
Eva, rejected numerous suitors to remain her mother's secretary and companion for the rest of Cosima's tenure.
Transfer of power On 8 December 1906, having directed that year's festival, Cosima suffered an
Adams-Stokes seizure (a form of heart attack) while visiting her friend
Prince Hohenlohe at
Langenburg. By May 1907 it was clear that her health was such that she could no longer remain in charge at Bayreuth; this responsibility now passed to Siegfried, her long-designated heir. The succession was accomplished against a background of family disagreement; Beidler thought that he had rights, based partly on his greater conducting experience and also because he and Isolde had produced Wagner's only grandchild, a son born in October 1901, who could establish a dynastic succession. Beidler's claims were dismissed by Cosima and by Siegfried; he never conducted at Bayreuth again, and the rift between the Beidlers and Cosima developed in due course into a major family feud. == Retirement, decline and death ==