Boris Godunov (opera) in the context of "Mussorgsky"

Boris Godunov (Russian: Борис Годунов, romanized: Borís Godunóv listen) 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 1825 drama Boris Godunov by Aleksandr Pushkin, and, in the Revised Version of 1872, on Nikolay Karamzin's History of the Russian State.

Among major operas, Boris Godunov shares with Giuseppe Verdi's Don Carlos (1867) the distinction of having an extremely complex creative history, as well as a great wealth of alternative material. The composer created two versions—the Original Version of 1869, which was rejected for production by the Imperial Theatres, and the Revised Version of 1872, which received its first performance in 1874 in Saint Petersburg.