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
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