 Wagner's use of the orchestra influenced Rimsky-Korsakov's orchestration, beginning with the arrangement of the polonaise from Mussorgsky's "Boris Godunov" that he made for concert use in 1889.Toward music more adventurous than Wagner's, especially that of Richard Strauss and later Claude Debussy, Rimsky-Korsakov's mind remained closed.He would fume for days afterwards when he heard pianist Felix Blumenfeld play Debussy's "Estampes" and write in his diary about them, "Poor and skimpy to the nth degree; there is no technique, even less imagination."