Fidelio Fidelio Fidelio (originally titled ; English: "Leonore, or The Triumph of Marital Love"), Op. 72, is Ludwig van Beethoven's only opera. The German libretto was originally prepared by Joseph Sonnleithner from the French of Jean-Nicolas Bouilly, with the work premiering at Vienna's Theater an der Wien on 20 November 1805. The following year, helped shorten the work from three acts to two. After further work on the libretto by Georg Friedrich Treitschke, a final version was performed at the Kärntnertortheater on 23 May 1814. By convention, both of the first two versions are referred to as "Leonore". The libretto, with
Tarquin (opera) Tarquin (opera) Tarquin is a chamber opera by Ernst Krenek to an English libretto by Emmet Lavery. Written in 1940, it is Krenek's only unpublished opera (Op. 90), though a premiere in German translation (by M.-C. Schulte-Strathaus & P. Funk rather than the composer) took place in 1950 in Cologne. Krenek, who was in Switzerland at the time of the Anschluss, escaped to exile in the USA and a teaching position at Vassar College, where Lavery (1902–86) was a newspaper editor in neighboring Poughkeepsie (he would later run for Congress and write for Hollywood). The piece was designed for college