i made up my own exercise based on a scale (any major or minor scale, but i would use the simpler major ones to begin with to get used to the the idea). use fingers 3,4,5 all the time. the idea is to play triplets continuously:start on top C and play 5,4,3 (which will be notes c,b,a), then move 5th finger down to b and play 5,4,3 again (b,a,g). carry on like this down the scale until you finish up on bottom c. you can finish up anywhere you like really but it rounds things off nicely to finish on the tonic note. then you can work up in reverse: 3,4,5 (c,d,e) (d,e,f) e,f,g) and so on.you could even go right from one of the piano to the other doing it, a nice work out but not a great thrill for anyone listening!to make the exercise purposeful (and hopefully not boring) you should be concentrating on every note to make sure you have evenness of weight/tone on each one. bonus: it's a great way to get to know all your scales even better than if you just play straight scales. it gets nice and challenging doing the exercise when more black notes are involved, or you have to think way up and down a melodic minor.
However, I know a violinist who studied with Dorothy Lane at Julliard in New York a long time ago, and she once told him that he was doing the "position change" (which is basically the same as the thumb under movement for us pianists) as fast as possible, but that this was wrong. When performing, the position changes should ALWAYS be AS SLOW AS POSSIBLE, she said, and that's what this violinist tells all of his students ever since. According to Dorothy Lane, that's the way all of the great violinists (Heifetz, Oistrakh, Perlman etc) did, and I guess it could be applied to piano too. However, in slow tempo I often practice these thumb under movements as fast as possible and then in performance tempo only as fast as necessary for the passage.
All I can say is that I don't usually "trust" anymore the fact tha a teacher with a certain methods produce good students/pianists. This is because a student can learn properly "in spite" of ill advices. And as we've seen recently many just don't do what their teacher says, they use alternative methods or the ones they designed and then keep lying to the teacher.So nowadays I trust only those advices and rules that1) Have a valid and detailed explanation as to why2) Are based on solid knowledge of anatomy and biomechanics (so when I head "the muscles of the fingers need ... I just stop reading/listening)Everyone has different opinions and one needs a criteria to determine what is worth listening and what is plain flawed.
everyone's different and what works for one person produces bad results for others.
this SLOW "position change", and he heard that basically everyone did it - Oistrakh, Heifetz, Perlman etc. Maybe it works different for some people but one should at least try it before dismissing the idea.
But what's like the biomechanics, physiologic and anatomic principle or reason behind this SLOW "position change". I'm not dismissing it but I need to be explained the reason for something otherwise I tend to doubt it has merit. Promoting certain ideas and techniques without explaining the principles behind them has always been how the finger-centered (those that believed there are important muscles in fingers and that they are to be trained and made stronger too) promoted their ideas.
Danny,Most of us are taught to change position (or use thumb under) as quick as we can, and it certainly helpful to practice this way, occasionally. However, in performance tempo there is really no need for changing position at that speed. You know Ravels "Ondine", right after the rhythmic figure in the right hand for the first 1 1/2 pages when the right hand has a very difficult pattern moving up and down two octaves at ppp for four bars - your hand is constantly switching position, but if you try to change position too fast, the WHOLE FIGURE will proably sound uneven - it did for me. The problem with this figure is that you try to move on to the next position (very fast) before having finished playing all of the notes in the previous position, and therefore, the sound becomes uneven. If you instead try to find EXACTLY THE RIGHT MOVEMENT for this figure, without any rushing, you will find that you can achieve this evenness. You will achieve it thanks to moving from position to position only as fast AS NECESSARY, not faster (or slower). Hope this makes sense...