Just a note regarding the comprehensive and enthusiastic review of the Naxos recording of Mussorgsky's Sorochintsi Fair - Rimsky-Korsakov did not complete or produce a performing version of the opera.

Indeed, the opera was not staged within Rimsky-Korsakov's lifetime, surviving excerpts being staged in 1913 and the first completion (by Cui) being performed in 1917.

Rimsky-Korsakov's arrangement of A Night on Bald Mountain is based on the version Mussorgsky created for interpolation in Sorochintsi Fair. This explains why his widely-performed arrangement ends lyrically and peacefully rather than with a bang as in the original score (1867). Rimsky-Korsakov's performing version of this "tone poem" was premiered in 1886.