Fidelio Vienna was under French military occupation, and most of the audience were French military officers. After this premiere, Beethoven was pressured by friends to revise and shorten the opera into just two acts, and he did so with the help of Stephan von Breuning. The composer also wrote a new overture (now known as "Leonore No. 3"; see below). In this form the opera was first performed on 29 March and 10 April 1806, with greater success. Further performances were prevented by a dispute between Beethoven and the theatre management. In 1814 Beethoven revised his opera yet again, with additional
Boris Godunov (opera) Boris Godunov (opera) Boris Godunov (, "Borís Godunóv") is an opera by Modest Mussorgsky (1839–1881). The work was composed between 1868 and 1873 in Saint Petersburg, Russia. It is Mussorgsky's only completed opera and is considered his masterpiece. Its subjects are the Russian ruler Boris Godunov, who reigned as Tsar (1598 to 1605) during the Time of Troubles, and his nemesis, the False Dmitriy (reigned 1605 to 1606). The Russian-language libretto was written by the composer, and is based on the drama "Boris Godunov" by Aleksandr Pushkin, and, in the Revised Version of 1872, on Nikolay Karamzin's "History of the