 More debatable, according to Maes, is Rimsky-Korsakov's editing of Mussorgsky's works.After Mussorgsky's death in 1881, Rimsky-Korsakov revised and completed several of Mussorgsky's works for publication and performance, helping to spread Mussorgsky's works throughout Russia and to the West.Maes, in reviewing Mussorgsky's scores, wrote that Rimsky-Korsakov allowed his "musical conscience" to dictate his editing, and he changed or removed what he considered musical over-experimentation or poor form.