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
Fidelio F. Finke Fidelio F. Finke Fidelio Friedrich "Fritz" Finke (22 October 1891 in Josefsthal, Austria-Hungary (now Josefův Důl, Czech Republic) – 12 June 1968 in Dresden, East Germany) was a Bohemian-German composer. Finke was born the son of a teacher in 1891 in the north-Bohemian village of Josefstal (modern-day Josefův Důl, Czech Republic). From 1906 to 1908, he attended a teacher's seminar in Reichenberg (now Liberec). He received organ, piano and violin lessons, and from 1908 to 1911, studied at the Prague Conservatory, where he studied piano and composition. From 1911 onward, he worked as a private music teacher and from 1915