She went so far as to state that my playing problems could be solved if I can eliminate ALL tensions in my forearm. I find the idea of playing without any tension in the forearm extremely alien. How can one exact strength on the keyboard without any forearm tension? When playing fast passages,surely the forearm needs some structure instead of swaying like the wind?
Well ... you need no strength to play the piano with power
Since the bed of the keys limits how much you can push down the keys, there's no difference betweem the landing on the keys of something as heavy as a bodybuilder arm and something so light as a young child arm
If you read a bit about the anatomy of the arm (and the fact that they connect at the back and the muscles of the back) you'll also find out there's no way a tensed arm exherts more power than a relaxed arm
The point is that even if you want to sound grave and pesante, making your arms tensed will not allow a "grave and pesante" sound that relaxed arms can't achieve
The first question should be.
Why do you think you play with more power when your arms are tensed?
If the answer is because "they weigh more" then think again about the limit of the keys bed
If the answer is strength then think again. Relaxation achieves way more strength then tension. This is a well known fact in martial arts. Tension actually decrease strength because of the slowing-down of blood-flow and neuromuscolar impulses
The solution to your dilemma is understanding the difference between static muscular activity vs. dynamic muscular activity.
First of all forearm tension has no effect in your playing if not decreasing the fingers movements. The fingers move thanks to the arm muscles to which are connected by long and fragile tendons. So if you tense your arms the movements of the fingers are reduced by a 70%.
Contraction is another story.
Fingers conctraction (because of the tendons links) doesn't start in the forearms but in the
torsoThe structure of the movement of your arm is like a long road starting at your fingertips and going up to the forearm, upper arm, shoulder blade and torso
The activity in this "road" (as you play) must be perpetual
Your playing is achieved by the
"effect of gravity" in conjuction with the
"dynamic muscolar activity"Take advantage of this two physical and anatomical phenomena and you can be 8 years old having tiny frail arms and still play with the same power of a 6.4 feet bodybuilder man while still keeping your arms absolutely relaxed (as your teacher said: if pulled they have to easily give away with no resistance)
To take advantage of the gravity you must sit at an height so that the top of the white keys is level with the tip of your elbows when in playing position (you need a friend telling you, you can't turn around and see yourself)
Proper SittingIn this position you must consider your playing as a perpetual continuum of
"small raising" and
"small falling" of the forearm
At the fraction of a second you hit the keys you allow an instantaneous
"contraction" to allow the weight to be trasferred from the torso to the arms and hands. Immediately after you allow an instantaneous
release so as to send back the weight from the hands to the torso. The contration is so short and the release follows so quickly that there's no
TENSION at all
This quick "activity" contraction-release contration-release contration-release is a
"dynamic muscolar activity" and it's the opposite of the
"static muscolar activity" which is the cause of
hand injuries and
tendonitis (not to mention unefficient movement. The secret to virtuosity is suppleness and easy movements)
A contration allows tension-less playing so you don't accumulate tension as you play
The tension can be accumulated only if the contraction is static (there's no release)
In fact the definition of muscular tension is "chronic contraction without release which accumulates fatigue"
That's why TENSION will never be needed or seeked in piano playing. TENSION is never positive and never benign. It is always harmful. It's vital to understand the difference between
contraction and
tension. Tension is also known as a co-contraction; and the word says it all.
Probably the most important aspect of piano technique is the ability of transferring the weight of the body from the torso to the arm (just for a fraction of a moment) and to send it back to the torso immediately
This mechanism is what controls the weight of the arms, the gradual change in volume, the dynamics and the power. Although we're by a western mentality lead to think that
muscolar tension equates
strength (which is contradicted by disciplines in which strength is needed) the truth is that the belief that we play with more power or roughness when our body, arms and muscles are tense is just an illusion, a neurological illusion ... we exherts more power because we believe we're doing something that increases power but actually the power come from somewhere else and not from the tensed arms and body
The basic anatomical process of playing is as follows
1) the forearm rises without tension
2) the forearm falls without tension
3) there's an optimum alignment at the moment of the impact
4) in the fraction of a second moment of the impact there's a short contraction
5) the contraction allows the weight to be transferred from the torso to the arms/hands
6) there's an instantaneous release
7) the release allows the weight to be transferred back to the torso
Tell your teacher to show you at the piano all the stages