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
Maddalena (opera) Maddalena (opera) Maddalena () is an opera in one act by the Russian composer Sergei Prokofiev, who also wrote the libretto based on a play of the same name by Magda Gustavovna Lieven-Orlov (under the pen name Baron Lieven). That play was in turn based on Oscar Wilde's play "A Florentine Tragedy". Although Prokofiev had already written four operas (the earliest being "The Giant" which he composed at the age of eight and was written down by the composer's mother), "Maddalena" is the first of his works in this genre to which he gave an opus number (op. 13). The