Oberon, or The Elf-King's Oath (J. 306) is a 3-act romantic opera with spoken dialogue composed in 1825–26 by Carl Maria von Weber. The only English opera ever set by Weber, the libretto by James Robinson Planché was based on the German poem Oberon by Christoph Martin Wieland, which itself was based on the epic romance Huon de Bordeaux, a French medieval tale. It was premiered in London on 12 April 1826. Against his doctor's advice, Weber undertook the project commissioned by the actor-impresario Charles Kemble for financial reasons. Having been offered the choice of Faust or Oberon as subject matter, he travelled to London to complete the music, learning English to be better able to follow the libretto, before the premiere of the opera. However, the pressure of rehearsals, social engagements and composing extra numbers destroyed his health, and Weber died in London on 5 June 1826. Performance history First performed at Covent Garden, London, on 12 April 1826, with Miss Paton as Reiza, Mme. Vestris as Fatima, Braham as Huon, Bland as Oberon and the composer conducting, it was a triumph with many encores, and the production was frequently revived. The libretto was translated into German later in 1826 by Theodor Hell, and it is in this German translation that the opera is most frequently performed. Weber was dissatisfied by the structure of the opera as it was produced in London, and intended to revise the work on his return to Germany, but he died in London before starting work on the revision. It is logical to assume that the German translation would have had the composer's approval (and that it would have been in that language that revisions would have been made), but he heard it only in English, and did not work on a revision or translated version before his death. Since then, other composers and librettists have revised the work, notably Franz Wüllner, Gustav Mahler (who, preparing a new performing version, rearranged some of the numbers and composed some linking music based on material from the existing score) and novelist-composer Anthony Burgess, who wrote a new libretto for Oberon and arranged the overture for guitar quartet. Franz Liszt made an arrangement of the overture in 1846 for solo piano (S.574). The opera was soon mounted elsewhere: Leipzig (23 December 1826); in 1827 in Dublin (1 February), Edinburgh (26 August) and Vienna (20 March), Prague in