Interesting post, hyrst. Thanks for your thoughts.
I will say that fundamentally, I have a bit of a different take on some of this stuff than I think you do. For example, I do not start anybody out in the standard "middle c" position. I purposely wish for them to develop, from the very first moment they sit at the keyboard, a concept of the piano that is not spacially limited any more than the instrument itself is. We travel everywhere on day number one, and their first piece aside from nursery rhymes, given to them within the first few lessons, includes several octaves worth of music. And it is the same thing with the music reading itself. From the very first moment they start, they are seeing the "Grand Staff" in its entirety, even ledger lines, and their concept of the piano and of the staff match each other.
Of course I supplement with varying concepts for the individual, but I have not found a student for which this basic format does not work at all. If it's not working, I focus on trying to present it in clearer and/or more creative ways, which has seemed to do the trick so far. I will admit that a few months ago I was reconsidering this method, but then as I went back over my reasoning and focused my efforts a little more, I found ways to present the ideas that seemed to bridge the gaps.
Basically, a person must learn how to comprehend notes that are side by side, and notes that skip. I don't think it makes a huge difference which one comes first, other than the repertoire one is limited to in the beginning stages, based on those two options. One of the things I *love* about learning to view lines and spaces separately is that it actually lays the groundwork for chordal structure. And if I had to say which concept I felt was more complex for the student, between stacked notes and single notes, I would say stacked are. I feel like they can learn notes that are side by side any day, while figuring out the concept of stacked notes (chords) may take a little more of a thought process.
Also, regarding the student keeping their hand on the piano, once again I have chosen the route that we go down for the purpose of avoiding what I percieve of as possible problems in the future. What I most want for a student to grasp is principles, especially if the student is just beginning, and the younger they are, the truer that feeling is for me. I am all about laying groundwork.
With that having been said, I always relate what they are doing with their hand to generalities in the music, and then back to their hand. We learn to look at groups of notes before we play, and figure out what kind of "hand position" we might want based on the group of notes (not just because we are in "middle c" position). This lays the groundwork for one's individual ability to make decisions on fingering, vs learning that they must keep their hands in a certain spacial region on the piano and when there, in a certain physical position.
There are a few main things I tell them at this point when they are putting their hands on the piano, and for all three of these, it only works initially when they are playing something in a five-finger position :
1. Give each finger a home.
No matter where they are, they are learning to use each finger and have each finger on the keyboard.
2. Keep your pinky on the keys no matter what.
We make a "game" out of it and whatever music they happen to be playing, this game becomes the aim of the motion. The moment they develop the ability to do this once, they have grasped the concept and I generally leave it from there. Their hand begins to mold to this general position.
3. Keep your thumb on the keys no matter what.
Sometimes I will say this one before the other. But I have found that when they can do this with both their pinky and their thumb at once, which has always been done within a single lesson, the rest of the fingers are also staying pretty close to the keys. Once they have accomplished it just once, we leave it.
I will admit though, I wait for the perfect time to introduce this for each student so sometimes it will be awhile. Once they get it though, I have found that they develop a very natural hand position wherever they are on the keyboard, without much commotion from me. And, from what I have witnessed, it is a far better position than when I used to spend time and effort trying to get my students to form the perfect hand shape and hold their wrists just a certain way and all of these things.
Anyway, I have rambled here

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m1469