I now come to the loud or sustaining pedal, which Rubinstein aptly called “the soul of the piano.” It certainly is the best friend the pianist has at his disposal for helping him to overcome the material drawbacks of the pianoforte’s constitution, and without it no legato playing or prolongation of tone would be possible at all.
Of course, there are two pedals on the modern pianoforte, even sometimes three, but the soft one is only used, as its name implies, for deadening the sound. The loud pedal, as it is called, is the real important factor, and when I speak of the pedal in future as a general term, it is always to this one that I am referring. The name “loud pedal” is really a misnomer, as its function is rather to sweeten the sound and render it more open, and also to add brilliance to the tone rather than actual loudness. If the pedal is a good friend it can also be the worst possible enemy if badly employed. Nothing is more terrible than the general blur cast over everything by the pedal when it is applied without expert knowledge. A few simple rules about how it should be used are as follows.
I have already mentioned that the pedal must be changed on different harmonies; it should also never be taken directly on the first beat of the bar to obtain the best results, but in syncopation with that beat, as in the example below.
