Músorgski Khovanshchina

Khovanshchina (Russian: Хованщина, Hovánščina, sometimes rendered The Khovansky Affair is an opera (subtitled a 'national music drama') in five acts by Modest Mussorgsky. The work was written between 1872 and 1880 in St. Petersburg, Russia. The composer wrote the libretto based on historical sources. The opera was unfinished and unperformed when the composer died in 1881. The piece was later completed by Rimsky-Korsakov and Shostakovich.