As hurrying and also dragging the tempi are both errors connected somewhat with faulty rhythm, I will speak of this next as a highly unsatisfactory failing. Rhythm is no doubt to a great extent instinctive, and is bound up a good deal with individual temperaments. But it must be carefully developed by teaching and analysis, for too much emphasis can never be bestowed upon giving every note in music its proper value, apart from any other rhythmical consideration. For rhythm in. piano-playing is so essential a factor in obtaining a good tone-production, that it is imperative to cultivate it with great attention to correctness of outline.
Lack of rhythm, or faulty rhythm, will take all character from a musical performance, and will leave an impression of insipidity and monotony where there is no rhythm, and of irritation where the rhythm is inexact, as the case may be.
Close on the heels of bad rhythm comes the weakness of always using the same kind of tone while performing. Plenty of variation of tone-colour is absolutely necessary for inspired and interesting playing on the piano, as, indeed, on all instruments.
On the piano this is more difficult to arrive at than on the stringed or even the wind instruments, and needs much study of the technique of touch. For frequently we cannot understand, after coming out from a concert, why what we appreciated as a really fine performance of a musical work had not arrested our attention more, or aroused keener pleasure. A certain sense of monotony or dullness had crept over us while listening.
Such a feeling, or rather want of feeling, is almost always the result of the performer’s failure to grasp the possibilities of his instrument in relation to tone-colour. Everything he plays is in a similar hue of tone, therefore a sameness and lack of life and contrast pervades the whole. It is a strange anomaly that the more beautiful is the touch of the pianist by natural instinct, the 1 more he is apt to fall into the fault of using it indiscriminately in the same strength, because he takes so much personal pride and pleasure in it. It is like the case of singers who are gifted with wonderful top notes, and, therefore, are always inclined to warble them forth in full but monotonous volumes of sound.