How do we know, and teach, how to move 'from the center otwards'? (From a teacher of course!) But just for discussions sake, this is a beautiful way to think about where motion originates. Where is the center? (Heart, soul, spirit, hips, gal bladder...?) I recall a quote from Richter when asked about something he played with an 'amazing' forte (something like that), and he replied "Oh, I played that from my big toe".
The centre of the human body is four fingers below the navel. This point is right in the middle of the body from the point of view of up – down, right – left and front - back (the actual point is not at your skin, but inside the body).
In the West we pay no attention to it. In the far East this point is of the utmost importance. So much so that they have a special name for it: Hara (Japanese) and Tantien (Chinese).
Ideally one should move from the Hara/tantiem. You can see that very clearly in many of the traditional Japanese crafts and arts. Martial artists will move and strike from that point: a punch or a kick will always be powered by the hip, the fist or foot being only the point of contact and no more. The host in a tea ceremony will do all the complex movements required to prepare and serve tea from this point. A Chinese Taichi master will likewise do all the complex movements of the taichi form moving from this central point of the body. And Richter was right in a sense, he was getting his centre powered by pressing against the toe.
When would I know that I am moving from the center outwards? This would seem to strongly relate to 'balance'. When we are balanced there is equilibrim, as in linear perspective, and therefore a strong sence of where the 'center' is. All movement then must be coordinated in a way that maintains 'centeredness'. However, what is the feeling of moving from the center outwards (when playing piano)?
This is difficult to explain in writing. It needs hands on instruction. Try this. Walk around, and observe where you are walking from. Most people in Western societies walk with their noses. The nose moves and the bodies follow their noses. Some people walk with their chins. You can observe them on the streets, chin forward, heads out of line, falling forward and basically being pulled by their chins. Some people walk from their shoulders. Now, to walk from your hara/tantien, imagine you have a rope going right through a hole in your body, four fingers below your navel. Imagine that this rope has a knot at one end, so that if you pull it, it will propel you forwards. Now you are walking from your hara/tantien. This is the most effective way of walking. Once you get the hang of it, you can start doing all sorts of movements form there.
Watch Japanese samurai movies. Observe the intriguing way samurai run. Only their legs move. Everything else is kept upright. It is quite strange, and yet no one pays too much attention to it. They are running by being “pulled” by their haras. Aikido masters can throw people around with tiny movements of their hands – or so it seems, until you realise that they are not throwing people with their hands, but with their haras.
If you really want to know what this is all about, I strongly suggest you enrol in a taichi/aikido/karate class and ask the instructor to show you how to move from your centre. This will change forever the way you think about piano technique.
I haven't read Whiteside, is her approach very different?
Different from what? From what Herve is saying? No, Herve is right on her school of thought.
Different from people who like to assign Hanon type exercise? You bet.
Yet, she is not in a vacuum. She belongs to a long line of pedagogues that in the beginning of the 20ty century started to challenge commonly held views about piano playing, piano practice and piano teaching. The most famous and well known being Deppe, Breitkopf and Tobias Matthay. Each one of these teachers informed and influenced the others (and Whiteside), and each disagreed with the others. Their main problem was vocabulary. Many times, they were saying the same thing, and actually agreeing, but they were using different terminologies. In any case, a synthesis has been made, and the best book that brings together all these theories is Seymour Fink’s “Mastering piano technique”. If you do not have this book, I strongly suggest you get it and the accompanying video.
Also have look at this thread where there is a discussion about Abby Whiteside:
https://www.pianoforum.net/cgi-bin/yabb/YaBB.cgi?board=misc;action=display;num=1075973976Best wishes,
Bernhard.