A final word of caution: The idea of letting your pinkies less rigid is fundamental, but it is quite pointless trying to develop it by itself.
Why?(...)the idea that it's impossible to develop something like physical ease outside of a musical context is simply absurd. Of course it makes sense to develop something by itself- provided you go about it the right way.
More specifically, I would suggest you to pick up pieces, not exercises
I have just started working out of Hanon! And yet I have learned SO MUCH!!! I can not describe how much better I've gotten from working out of it. It really is something great.
One thing Hanon and other studies do provide is practice for patterns in every key. You do play each excercise in keys other than what's written, right? Patterns practiced until the muscles learn to do them without real thought is an important part of the excercises.
"my point wasn't that. I agree with you: you don't need a musical context to develop your physical abilities, although I see no reason in doing it otherwise."How about to develop a greater of ease of movement, that can then be applied to an artistic context? If a ballet dancer with a stiff knee receives treatment, do they need to think specifically about anything artistic or dancing-related while doing so? Would failure to think about dancing while receiving treatment render it useless? In a single word, no. It doesn't matter an ounce whether they have such things in mind while developing movement. If something improves freedom and range of movement that is all that matters. They can then apply the benefits to their dancing. To suggest that everything needs an immediate musical context is simply not accurate. Frequently, to develop movement for its own sake is to expand the range of intentions you can go on to realise. If a particular finger is stiff, the problem evidently lies in the nature of its movement. Who has "musical" problems that coincidentally cause just a single finger to give poor musical results? Such problems lie in movement and control- and must be dealt with on those terms, for any hope of progress. "However, my point was another: I mean it is pointless trying to develop the pinky by itself, without considering its close physiological relationship to the fourth finger, or the recurring use of the wrist, and so on."Why? If done wrong, I agree. If done well, it will be very useful. I've recently made tremendous progress on my motion with weaker fingers. Quite honestly, the less musical context I've applied the greater the progress. Many developments in my weak fingers are owed to exercises away from a piano. The more I allowed musical intention to enter the immediate foreground while doing the work, the more my arms wanted to press and the more I prevented better movement from developing. I had to willfully understate musical shapes to progress. Now I have a wider ability, I can return to what are naturally vastly more pronounced musical intentions with a hope of realising them. I don't believe Hanon is of any use without an understanding of what is required from the movement. However, I do believe that work on quality movement in general is extremely useful- regardless of musical context.
While working at the piano, I have found no personal benefit from "non musical" exercises. There is one fact that cannot be dismissed and that is you can't find a technical problem in an exercise that you cannot find in a piece of music. So, while at the piano, working on anything other than real repertoire is, in my mind, a waste of time. However, that does not mean one should ONLY practice what is written on the page. I can practice whatever Hanon exercise that works on repeated notes, however when I come to a section in the music (let's just use the presto section of Liszt's Hungarian Rhapsody 13) the context is entirely different. While the structure is the same, it requires a completely different form of movement that Hanon or any other exercise cannot properly prepare an individual for. So why did I bother practicing that portion of Hanon? There are many many pieces that offer "practice" in repeated notes, and the first thing that comes to mind is Scarlatti's K. 141. However, the argument is the same, if I can play Scarlatti's k. 141, am I a wizard with repeated notes? No. But now I have a Scarlatti sonata under my fingers and not some pointless technical exercise.
It's a movement issue, not a musical one