Boris Godunov (opera) the repertory due to difficulty in appreciating his raw and uncompromising idiom. Therefore, Rimsky-Korsakov was justified in making improvements to keep the work alive and increase the public's awareness of Mussorgsky's melodic and dramatic genius. The Rimsky-Korsakov version remained the one usually performed in Russia, even after Mussorgsky's earthier original (1872) gained a place in Western opera houses. The Bolshoy Theatre has only recently embraced the composer's own version. Dmitriy Shostakovich worked on "Boris Godunov" in 1939–1940 on a commission from the Bolshoy Theatre for a new production of the opera. A conflation of the 1869 and 1872 versions had
Boris Godunov (opera) finished in 1872 (vocal score, 14 December 1871; full score 23 June 1872), and submitted to the Imperial Theatres in the autumn. Most Mussorgsky biographers claim that the directorate of the Imperial Theatres also rejected the revised version of "Boris Godunov", even providing a date: 6 May 1872 (Calvocoressi), or 29 October 1872 (Lloyd-Jones). Recent researchers point out that there is insufficient evidence to support this claim, emphasizing that in his revision Mussorgsky had rectified the only objection the directorate is known to have made. In any case, Mussorgsky's friends took matters into their own hands, arranging the performance of