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
The Diary of a Madman (opera) The Diary of a Madman (opera) The Diary of a Madman is a one-act chamber opera by the composer Humphrey Searle. It is based on the short story of the same name by Nikolai Gogol. The opera was premiered in 1958 in Berlin. The libretto is by the composer. The work, which is the first of Searle's operas, was commissioned by Hermann Scherchen, then the director of the Berlin Festival. Scherchen gave Searle complete choice of subject, stipulating only that the orchestra be of no more than 15 players, and that there should be no more than four singing roles.