You could spend days browsing through old threads here with people arguing about what is good technique... The point is, good technique consists of so many things it's not easy to simply define. My definition consist of:- Playing as physically effortlessly as possible while still bringing out everything you want to bring out in the music. And this is not always easy to tell from outside unless you are really on expert in assessing the human body and movements. Why? Because we come in different sizes and shapes. A girl with small hands has to develope different technique than Rachmaninoff when playing large chords. It will never be as effortless, but it should be as effortless as physically possible.- Skillful pedalling to both create the sounds one wants and also use the pedals as an extensions of one's hands. There are countless of different pedalling techniques to master.- Having enough tools in one's box to execute everything in the music one plays without having to take short cuts. There's no one technique, but one should have plenty of different techniques available that one can employ according to the demands of music.- Also having mastery over the instruments which not only includes handling the keys and the pedals, but the ability to immediately hear the piano's and the hall's properties and adjust one's playing to those to achieve the best sound.- The physical part of technique one has is so well internalized that one can concentrate on musical matter and interpretation and so solid that one doesn't keep on missing what one is trying to do.Here's an example of exceptional technique (probably only possible for someone with exceptional physique and mind):
Outin's position is one I agree with almost entirely, but I don't see why he needs to virtually double post it
You need to have some understanding of the instrument you are playing, and its characteristics. Your ear develops as you go along, together with understanding of music, theory, interpretation.
i have looked over your links but am still a bit confused.my observations:Ms. Wang had lots of arm movement(i suppose that is good?), but her wrists looked a bit tense when she stayed in a position for more than 3 notes( 1:51, left wrist, i think) ? and she was tense when hitting those base notes repeatedly in the beginning? and dcstudio in your first link (of yourself playing) at 1:40 your right hand was tense too?what i noted for the two above was that their wrists moved. that was really it.the only thing that i found different in the bad example was how his wrists and elbows were locked, and also i could tell something was wrong but coudn't place what it was.sorry if the first two observations were absurd. i'm just trying to make sense of this.
The telltale sign is the music itself.
how is your ear and interpretation developed? does it just automatically get better as you play?would it be possible to understand the characteristics of an instrument if you played on the same upright your entire life? (other than in recitals, i play on a grand, but i don't feel much different than playing on an upright)
It was hard to answer, so I hope this makes some sense.