There are only a couple of techniques you can use to play each etude. If you use the wrong one, even though you can play all the notes, it will still be difficult and would require excessive practice. Difficulties with Op.10-2 is usually excessive finger curving. Another possibility, which was highly unlikely given that he is a competition winner, was one of rigid wrists. I simply chose the most probable technical issue and from the video it shows that I was correct. For any difficulty, there's usually a technical issue underlying it.
being original in your interpretation is the ultimate goal of classical performance. This is incredibly egocentric thinking and one I strongly disagree with.
Why do you conclude that Rabinovich has difficulties with ANYTHING concerning the mechanics of piano playing? He simply answered a question about ranking.
But if you have nothing new to say about a piece, why should I pay to listen to you or buy your recording, or even go to the trouble of listening, when I have heard already what you have to say?I'm not defending eccentricity for the sake of novelty, but originality that is still true to the music.
You can play the others with the technique he uses, but it just happens to let him down in this specific study due to its unique requirements.
Do you have any ...uhm... evidence for this statement? Have you actually witnessed him playing this particular etude?
I would make the assumption that you've never heard the music before
As well, most recordings kind of suck in terms of musical quality.
My first thought was, he probably curves his fingers too much when he plays. And here's video that shows him playing in just such a manner. It's not your hand - it's your technique.
I don't think you can assess anyone's technique by the amount of curving of their fingers.
I agree with you. However, what I do find useful though is which part of the key they use, which of course, like you say is influence by how long their fingers are and consequently how curved their fingers are.
Wouldn't it also depend on the piano one plays? With proper grands it seems to be much easier to just go as deep as the fingers would require, without the sound suffering...at least it is for me...
Unless one is contemplating an electronic keyboard, key lengths are sort of standard nowadays at least. I'm actually referring to which part of the key they use, which if you infer from my previous statement cannot be too close to the fall board if there is any curvature of the fingers involved.Sure with some chords/key combinations, the middle fingers come close to the fall board but that is the way the hand is shaped. Eg. Thumb on c#, 5 on c#, the other fingers have to be close to the fall board. But when you do say, Chopin Op 10 no 5 or Op 25 No 1, then where you land can a great bearing on what accuracy you have (ie. if you have "flat" fingers) and what tone you will achieve.My experience is that with modern pianos both grand and upright, the key lengths usually is not an issue. But of course if you have "flat" fingers that might be a different issue.
And yet I was able to tell, based only on his stated opinion of the most difficult Chopin etude, how he actually played the piano.
I have very little experience with different pianos. Maybe there's something wrong with my upright, but it's extremely difficult to play it well close to the fallboard and this is what my hand shape requires to be able to play some things without harmful tension. I do not experience such difficulties with my teachers grands. So I have assumed that uprights (with their different mechanism) are in general more difficult to play.
Uprights do feel different. However, we do what we must.The upright action is very different. For one, you mentioned the shortened lever action (which to some extent you can ameliorate by playing close to you and further from the fall board - meaning more curved fingers). They are generally less responsive (without the double escapement mechanism) and also when the una cord is used, the action moves closer to the strings and hence distorts the feel altogether. With the grand, the action shifts left and hits fewer strings and in different parts of the hammer, but this does not change the length of the key strike.Without much analysis, I would say that you are merely experiencing the shorter leverage action of the action when you play closer to the fall board on your upright and maybe also how the springs in your action work. But this is merely conjecture.