Fidelio work on the libretto by Georg Friedrich Treitschke. This version was first performed at the Kärntnertortheater on 23 May 1814, again under the title "Fidelio". The 17-year-old Franz Schubert was in the audience, having sold his school books to obtain a ticket. The increasingly deaf Beethoven led the performance, "assisted" by Michael Umlauf, who later performed the same task for Beethoven at the premiere of the Ninth Symphony. The role of Pizarro was taken by Johann Michael Vogl, who later became known for his collaborations with Schubert. This version of the opera was a great success, and "Fidelio" has been
The Secret (opera) The Secret (opera) The Secret () is a comic opera in three acts by Bedřich Smetana. The libretto was written by Eliška Krásnohorská. The premiere took place on 18 September 1878 at the Nové České Divadlo (New Czech Theatre) in Prague. Krásnohorská proposed the idea for a new opera to Smetana two weeks after the opening of "The Kiss", but kept details of the plot a secret from the composer until July 1877, when a draft outline, drawing on several sources, including "Les femmes et le secret" by La Fontaine, was sent to him. The librettist had set the action