[jancsika]

> The best way that I can think of it is that it's similar to playing a sport where you have moments to change your trajectory and movement to accomplish what you want.

If I had to speculate I'd say a lot of people have the experience of both this and the inner voice, depending on context.

It doe make me wonder: are people who can't spontaneously "surf" sentences in realtime and instead rely wholly on an inner voice? :)

Edit: I've noticed that reflecting on this kind of stuff can wreak havoc on young musicians. I remember a colleague who learned the Grieg concerto but was having a small number of wrong notes (say, 5% or so) creep into various sections of the piece, seemingly at random. The teacher started to drill down on each section, having the student write down which finger plays what, subdivide tricky rhythms, and so forth.

What was wild was that each time the teacher asked the student to notate the chord at the point where a mistake occurred, this would generate a cascade of more mistakes. She'd essentially been playing mostly by feel without thinking about the harmony at all. The added anxiety about harmony increased her error rate for relying on feel; pretty soon she wasn't able to make it through the piece. They then went back methodically through the entire thing, having her notate each and every harmony and describe how each one relates to the next, which were primary vs. ancillary, and so forth. Only then could she play the entire piece with precision.

So sometimes to get from 95% to 100% you have to go back down to zero!