Rhythm is one of the pianist's most important assets, something he cannot do without. It might be said that the possession of a well-developed rhythmic sense is one point in which the artist differs greatly from the amateur. The latter thinks nothing of breaking the rhythm at any time and place that suits his fancy; while the artist is usually conscientious about such matters, because his time sense is more highly developed. A perfect time sense is often inherent in the artist, a part of the natural gift which he has cultivated to such a high state of achievement. It may be he has never had any difficulty with this particular point in piano playing, while the amateur has constantly to struggle with problems of time and rhythm.
THE METRONOME
When the subject of using such a mechanical aid as the metronome to cultivate rhythmic sense, is broached to the executive artist, it does not always meet with an assenting response. With such bred-in-the-bone sense of time as the artist commands, it is little wonder he takes no great interest in mechanical time-beating. Josef Hofmann's censure of the metronome was probably due to his inborn rhythmic and artistic sense; yet his words have doubtless had their effect on many students, who, lacking his sense of rhythm, would have been greatly benefited by its use.
Godowsky, when asked his opinion of the metronome, replied: "I assuredly approve of its use; I have even devoted a chapter to the metronome in the Progressive Series, my great work on piano playing." Edwin Hughes remarks: "If pupils have naturally a poor sense of rhythm, there is no remedy equal to practising with the metronome, using it daily until results are evident, when there can be a judicious letting up of the discipline. The mechanical sense of rhythm, the ability to count and to group the notes of a piece correctly, can be taught to any person, if one has the patience; but for the delicate rhythmic nuances required by a Chopin Mazourka or a Viennese Valse, a special rhythmic gift is necessary."
Artists and teachers who have come under Leschetizky's influence and use his principles, are generally in favor of the metronome, according to their own testimony. The fact is, they as teachers often find such deficiency in their pupils on the subject of time sense and accuracy in counting, that they are forced to institute strict measures to counteract this lack of rhythmic comprehension.
Granting, then, that the correct use, not the abuse, of the metronome is of great assistance in establishing firm rhythmic sense, let us turn our thought to the fascinating subject of—
TONE COLOR
When De Pachmann affirmed that he uses certain fingers to create certain effects, the idea was thought to be one of the eccentric pianist's peculiar fancies. Other players, however, have had the same thought, and have worked along the same line—the thought that on the fingering used depends the quality of tone. For instance you might not play an expressive melody with a consecutive use of the fifth finger, which is called a "cold finger" by Thuel Burnham. He would use instead the third, a "warm finger," to give out a soulful melody.
TONAL VARIETY
The pianist who desires to play effectively, must continually strive for variety of tone, for tonal coloring. These can be studied in scales, chords, arpeggios and other technical forms. The singer seeks to make a tone of resonant color, not a straight, flat tone; the pianist, on his part, endeavors to give color and variety to his playing in the same way. Harold Bauer thinks variety must be secured by the contrast of one tone with another. Even a very harsh tone may be beautiful in its right place, owing to its relation to other tones, and its ability to express an idea. To render the playing expressive by the contrast of light and shade, by tonal gradations, by all varieties of touch, by all the subtleties of nuance, is a great art, and only the most gifted ever master it in its perfection. These are the things that enchant us in Paderewski's performance, and in the tonal coloring of Gabrilowitsch. Hofmann's playing is a marvel of atmosphere and color; such playing is an object lesson to students, a lesson in variety of light and shade, the shifting of exquisite tonal tints.