 Conversely, his care about how or when in a composition he used these scales made him seem conservative compared with later composers like Igor Stravinsky, though they were often building on Rimsky-Korsakov's work.While Rimsky-Korsakov is best known in the West for his orchestral works, his operas are more complex, offering a wider variety of orchestral effects than in his instrumental works and fine vocal writing.Excerpts and suites from them have proved as popular in the West as the purely orchestral works.