Understanding music simply means not being irritated or puzzled by it. - Charles Rosen

In Shakespeare's The Merchant of Venice, act V, scene 1, we find this exchange between the two young lovers: <p>JESSICA: I am never merry when I hear sweet music
LORENZO: The reason is, your spirits are attentive<p>The opening of the finale of Beethoven' s 'Emperor' Concerto provides a splendid example of the kind of theme that is the inspiration for this book. A completely unified theme that hangs together beautifully, it nevertheless portrays vividly a series of contrasting sentiments in a succession that amounts to a small narrative ...

It was this indifference to the quality of his material that earned Liszt the contempt of his most distinguished contemporaries and of many of the most respectable critics and historians of posterity. It was, nevertheless, his greatest strength. It made it possible for him to manipulate the material ruthlessly, to concentrate on effects of realization with unprecedented intensity, and to integrate styles and techniques of performance into composition in a new way. His invention of novel keyboard effects and his mastery of musical gesture have always been undervalued, especially by pianists of the German school who prefer the kind of music that can be executed while soulfully regarding the ceiling. On the whole, the most genuine understanding of his music has been displayed by musicians of eastern Europe, and he may almost be considered as the founder of Russian pianism.

In almost every edition (and consequently most performances) of Chopin's Sonata in B flat Minor, Op. 35, there is a serious error that makes awkward nonsense of an important moment in the first movement. The repeat of the exposition begins in the wrong place.