The absolutely inaudible is rejected from music during the period of Viennese Classicism in which every musical line is potentially or imaginatively … - Charles Rosen

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.

Chopin's mazurkas stand apart from the rest of the considerable production inspired by folk music which reaches into all forms of Romantic music; they cannot conveniently be classified with any of the other manifestations. They are not arrangements of popular folk tunes, ... He uses only fragments of melody, Polish formulas, typical national rhythms, and he combines them in his own way with great originality. From early on, Chopin's mazurkas are much more elaborate than the few modest pieces employing mazurka rhythms by Chopin's Polish predecessors, and they soon became the occasion for some of the most complex and pretentious of Chopin's forms.

We can see that canonic status is accorded to the works of a composer not by posterity, or at least not by a posterity as distant in time as is sometimes thought; nor does it depend very much on whether the works are frequently performed for the public in every important musical center. To a certain extent, canonic status is actually built into some new works, partly by the way they impose themselves on an already substantial musical tradition. This may explain why it is so difficult to alter a firmly installed canon in any radical way, or to dislodge works that have been an integral part of it for some time.