Fidelio some spoken dialogue, tells how Leonore, disguised as a prison guard named "Fidelio", rescues her husband Florestan from death in a political prison. Bouilly's scenario fits Beethoven's aesthetic and political outlook: a story of personal sacrifice, heroism, and eventual triumph. With its underlying struggle for liberty and justice mirroring contemporary political movements in Europe, such topics are typical of Beethoven's "middle period". Notable moments in the opera include the "Prisoners' Chorus" ("O welche Lust"—"O what a joy"), an ode to freedom sung by a chorus of political prisoners, Florestan's vision of Leonore come as an angel to rescue him, and
The Diary of a Madman (opera) Searle had recently written incidental music for a radio production of Gogol's story, starring Paul Scofield, and decided to choose the story for his opera, providing completely new music. The libretto was written by the composer, based on the translation of Gogol's story by D. S. Mirsky. The opera is scored for an orchestra of single strings, woodwind and brass, with two percussionists. An electronic tape is also specified to produce particular sound effects. The voices of two dogs are directed to be sung by the same performer, using a loudspeaker. The opera was written in London and Amalfi between