Lang Lang's actions are completely natural, he does it even in practice, his body and face takes on the character of the feeling he uses in his interpretation, and many many people love it and are attracted to the sheer joy he seems to have at the instrument.Horowitz appeared nervous and tense alot of the time, quite still, and this informed the atmosphere also, a nervous exciting atmosphere.Argerich shows more ease and naturalness, it's just her fame that gives her most of the aura she has.
Too much and people aren't so interested.
Und ja , m1469, I don't mention music because that's a 'given' and doesn't happen exclusively 'on stage'.
This is a very interesting thread and very enjoyable to read: thanks to all.On this topic, the opinions of Rachmaninov are mentioned on a thread on the other board.
If you forget the concert date - your stage presence is insufficient.