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
Fidelio the beautiful weather. Marzelline similarly begs him, and Rocco agrees to distract Pizarro while the prisoners are set free. The prisoners, ecstatic at their temporary freedom, sing joyfully ("O welche Lust"—"O what a joy"), but remembering that they might be caught by the prison's governor Pizarro, are soon quiet. After meeting with Pizarro, Rocco reenters and tells Fidelio that Pizarro will allow the marriage, and Fidelio will also be permitted to join Rocco on his rounds in the dungeon ("Nun sprecht, wie ging's?"—"Speak, how did it go?"). Rocco and Fidelio prepare to go to Florestan's cell, with the knowledge that