10 years ago by
A Pianist
The "Russians" don't throw weight around on the piano. If that is described somewhere as "Russian school", then it is either misinformed or it is probably a metaphor for something else. There are exercises for beginners like "mostik" (hanging bridge) which involve lots of weight hanging with depressed keys, supported by the shoulders at one end and one or more fingers at the other end, but those are preparatory exercise and are meant to 1) "strengthen" the fingers and 2) loosen up a tense body. As Neuhaus says, the fingers should be able to bear, to support the weight of the body, but this has more to do with not collapsing whatever the reactions are when lots of energy is used. This does NOT mean that one should throw weight or mass around. The fingers are seen as independently moving entities, and in such a case, before the movement of the finger begins, the hand rests on the keys just enough exactly as you describe. This is nothing passive or neutral; it is indeed preparation for action, like a cat ready to spring at its prey.
Arm weight itself, however, DOES NOT CAUSE tone. The sound may change, however, become "warmer", when arm weight is somehow involved as a factor or merely as an idea to take away stress. For example, thinking of "arm weight" in slow passages may decrease acceleration of the finger a bit, and the tone becomes rounder, fuller, etc. And, of course, if you lift your hands as high as Rubinstein did at times and let them come down with the violence he demonstrated, then the mass of the lifted entity clearly takes part in tone production. There's no denying that, I think.
Now, let's have a look at how I understand arm weight is really used in "finger passages". I will use terminology I read on an on-line source that is no longer available, but the ideas are by Josef Gat (a student of Franz Liszt) in his famous book on piano playing, which is out of print and also no longer available (I have a copy in Russian).
Let's assume that each key has a nominal weight of 1 ounce. In slow tempo we may only play, let's say, 2 notes during a four-second period, with an upthrust of two ounces. At higher speeds, however, we may play 50 notes during the same time frame, and our fingers find comfort beneath their "blanket" of arm weight as they have to deal with a daunting upthrust of 50 ounces (actually, the forces become significantly greater while speed increases, but we want to keep things simple for theoretical purposes). One could say that the many little springs of upthrust form a "mattress of resistance" against the weight of the flexible blanket. As we increase the speed from fast to faster and very fast, the amount of weight gradually increases with it. One may also think of the fingers as wheels and the arm weight as part of the car's shock absorber system. If the latter weren't there, the car would start take-off at higher speeds. I hope this makes sense somehow.
Of course, in slow or medium tempo it is of no use to deliberately apply/"transmit" weight to create tone. Even Matthay called this a "sin". Those false ideas probably come from the "heavy" (link to a direct download of the pdf version of his "Natural Piano Technique") and are explained as "Matthay" even today.
Paul