Fidelio by Ferdinando Paer (a score of which was owned by Beethoven). Beethoven published the 1806 libretto and, in 1810, a vocal score under the title "Leonore", and the current convention is to use the name "Leonore" for both the 1805 (three-act) and 1806 (two-act) versions and "Fidelio" only for the final 1814 revision. The first version with a three-act German libretto adapted by Joseph Sonnleithner from the French of Jean-Nicolas Bouilly premiered at the Theater an der Wien on 20 November 1805, with additional performances the following two nights. The success of these performances was hindered by the fact that
Fidelio he must be killed and buried within the hour. Fidelio is shaken; Rocco tries to discourage Fidelio from coming, but Fidelio insists. As they prepare to leave, Jaquino and Marzelline rush in and tell Rocco to run, as Pizarro has learned that the prisoners were allowed to roam, and is furious ("Ach, Vater, Vater, eilt!"—"O, father, father, hurry!"). Before they can leave, Pizarro enters and demands an explanation. Rocco, thinking quickly, answers that the prisoners were given a little freedom in honor of the Spanish king's name day, and quietly suggests that Pizarro should save his anger for the prisoner