The First Principles Of Pianoforte Playing

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90                   KEY-TREATMENT ; MUSCULAR ASPECT.
6) : Not only should we therefore reach the key-surface quite easily and lightly; but we must also be most careful to remem­ber, that the required tone has to be made during- the ensuing short descending- movement of the key.1
7): This light fall of the limb upon, and subsequent move­ment with the key, may either form an unbroken descent, or we may instead bring the finger into contact with the key before the moment its depression is due.           But in either case we must,
before using the key, insist on feeling its resistance*
8) : Since careful Contact is so essential, and Touch            since Tenuto and Legato further require the OF-
eration of a light resting Weight, and as we must nevertheless often apply much energy to the key in addition to this Resting to provoke the key into the necessary tone, it fol­lows that TOUCH consists of the combination of two muscular operations, viz. :
a)  The act of * Resting," and
b)  The act of " Added-impetus."
9) : The act of * Restingn is practically continuous during each phrase, but may differ in its actual weight. This consti­tutes the difference in Basis between Staccato and Legato.
10O): The u Added-impetus" is applied only for and during key-descent; and it must cease to exist the very moment that tone-emission commences.           This law applies both in Legato
and in Staccato.
11): For Staccato, the Resting must be no heavier than the key will bear at its top-most level.
For Tenuto and Legato, the Resting should never be heavier than will just suffice to retain the keys depressed.
12): The Legato-resting, employed without any Added-impetus, is the only simple form of touch; and thus employed, it gives us an absolute ppp Tenuto or Legato.
1 For the act of Tone-production does not really commence until we have actually reached the key.
* Explanation of §§ 8 to 15, found in Chapter XV., page 135.
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