Fidelio abandoned "Vestas Feuer" for "Fidelio", and was eventually freed from his obligations to Schikaneder when the latter was fired from his post as theater director in 1804. "Fidelio" itself, which Beethoven began in 1804 immediately after giving up on "Vestas Feuer", was first performed in 1805 and was extensively revised by the composer for subsequent performances in 1806 and 1814. Although Beethoven used the title ' ("Leonore, or The Triumph of Married Love"), the 1805 performances were billed as "Fidelio" at the theatre's insistence, to avoid confusion with the 1798 opera ' by Pierre Gaveaux, and the 1804 opera "Leonora"
Det sjungande trädet (opera) Det sjungande trädet (opera) Det sjungande trädet ("The Singing Tree") Op.110 is an opera in two acts by the Finnish composer Erik Bergman. The Swedish-language libretto, based on a Swedish fairy tale, was written by Bo Carpelan. The opera premiered on 3 September 1995 at the Helsinki Opera House. "Det sjungande trädet" was Bergman's only full-length opera and was composed between 1986 and 1988 as a commission from the Finnish National Opera. Prior to that, the closest he had come to the operatic genre was his 1971 "Samothrake" Op. 69, a 12-minute "musico-dramatic tableau" for speaker, mixed choir, and dancers.