Charles Rosen

Sonata form could not be defined until it was dead. Czerny claimed with pride around 1840 that he was the first to describe it, but then it was already part of history.

Critical evaluation was transformed into understanding, and criticism became not an act of judgment but of comprehension.

Visual delight, sentiment, and exploration become one in the new appreciation of landscape and Nature.

For Mendelssohn, Beethoven was the new point of departure, and a German composer could not afford to ignore him, as Chopin and Verdi were able to do.

The absolutely inaudible is rejected from music during the period of Viennese Classicism in which every musical line is potentially or imaginatively audible, but it makes a dramatic reappearance in the music of Schumann. The most striking of many examples is one of the episodes in the Humoresk, the last of the great piano works of Schumann's early years. ... There are three staves: the uppermost for the right hand; the lowest for the left; the middle, which contains the melody, is not to be played. Note that the melody is no more to be imagined as a specific sound than it is to be played: nothing tells us that the melody is to be heard as vocal or instrumental. This melody, however, is embodied in the upper and lower parts as a kind of after-resonance-out of phase, delicate, and shadowy.

It is not, however, the unfamiliarity or strangeness of a work or of a composer's manner that is a bar to understanding, but rather the disappearance of the familiar, the ongoing disappointment of the expectations and hopes fostered by the musical tradition in which we have grown up.

Liszt has never needed revival; his music has always been an important part of the concert repertoire. Nevertheless, he has appeared to need rehabilitation.

I have never believed that the historian should seek to perpetuate the misapprehensions of the past, and it is true that we understand Beethoven today better than his contemporaries did, better, above all, than the generation that immediately followed him, including his own most important pupil, Karl Czerny.

The most signal triumphs of the Romantic portrayal of memory are not those which recall past happiness, but remembrances of those moments when future happiness still seemed possible, when hopes were not yet frustrated.

Technical display in Chopin, after the early works, is transmuted into tone color or dramatic gesture-we may say, to accept the prejudices of Chopin's own generation, that it has been ennobled. This is the source of much of the poetry in Chopin's music: it comes from the transformation of the vulgar into something aristocratic.

This is the true paradox of Chopin: he is most original in his use of the most fundamental and traditional technique. That is what made him at the same time the most conservative and the most radical composer of his generation.

It is fitting that a discourse on Romantic music should commence with a meditation on the art of Bach. The Bach revival is still sometimes considered an early nineteenth-century phenomenon, although this is hardly tenable: in the 1780s Mozart was deeply affected by Bach, and at the same time Beethoven was being brought up on the Well-Tempered Keyboard. Bach was well known to European musicians as a composer of keyboard music through manuscript copies of this work long before systematic publication began in 1800. The "revival" of Bach in the Romantic period was basically a rediscovery of his choral works and a new evaluation of his technique: his art was no longer simply a model for the fugue, as it had been in the eyes of Mozart, but for the art of music as a whole. The new approach to Bach and to Baroque music in general, however, did not extend to the sound of that music on the original instruments. Few musicians in the 1820s and '30s 'had the slightest interest in the sonority of old harpsichords or Baroque organs (Ignaz Moscheles was an engaging exception). What they saw, and needed to see, in Bach was the achievement of an ideal.

I do not think that any composer has ever asked for octave glissandi on the black keys, but there is a recording by Moriz Rosenthal of Chopin's Black-Key Etude in which he plays the short octave passage in both hands glissando: it hurts my hands just to think about it.

The piano is the only keyboard instrument in which one can grandly vary the effects of the harmonics or overtones of a chord at will by balancing the sonority in different ways.

Some of the Etudes in the first set, opus 10, were written by the time Chopin was twenty. It is with these pieces that Chopin's style was fully revealed in all its power and subtlety. Later works are sometimes more ambitious and, in a few cases, more audacious, but there were no radical changes of style, nothing to compare to the later revolutions we find in the careers of Haydn and Beethoven, or even in the shorter lives of Mozart and Schubert. Chopin's mastery was proven with the twelve Etudes of opus 10.