Nikolay Rimsky-Korsakov, Principles of Orchestration, with Musical Examples Drawn from His Own Works
“ He who undertakes such work should enter as deeply as he may into the spirit of the composer, try to realise his intentions, and develop them in all their essential features.Though one's own personality be subordinate to that of another, such orchestration is nevertheless creative work. But on the other hand, to score a composition never intended for the orchestra, is an undesirable practice. ”
