Meyerbeer's approach to opera may seem cynical. His music is not, like Donizetti's, an immediate expression of the sentiments of his characters but a… - Charles Rosen

Our sensuous appreciation of the world and of the works created by man has, no doubt, a biological foundation, one shared by all human beings, but that is no use to us when we try to evaluate a Bach fugue or a Dostoevsky novel-or even the simple experience of a landscape, as our delight in the view of a mountain or a waterfall is also determined by the traditions of our culture. The coexistence of different criteria of judgment is, in any case, by now a fact of life. Beethoven cannot be judged or even understood by the standards of Mozart, however much he may have continued them, nor Berg by the standards of Wagner or Richard Strauss, nor Elliott Carter by the values of Ives and Stravinsky.

For Beethoven, music was still shape, realized and inflected by instrumental sonority: other realizations may be as absurd as arrangements of the Hammerklavier, for example, always are, but the musical conception takes precedence over its realization in sound. The sonority serves the music. For Schumann, however, as for Chopin and Liszt, the conception was worked out directly within the sonority as a sculptor works directly in clay or marble. The instrumental sound is shaped into music.

The musical language which made the classical style possible is that of tonality, which was not a massive, immobile system but a living, gradually changing language from its beginning. It had reached a new and important turning point just before the style of Haydn and Mozart took shape.