Writing music physically

It surprises me how much of my writing process is a physical one. I haven’t thought about it much, but in retrospect, a lot of my writing happens not only when my ears tell me what’s supposed to come next, but when my hands tell me what they’re supposed to do next. I guess that’s part of having played a lot as a kid; my hands seem to know what “good” music feels like on the piano. And thinking back on the stuff I’ve written, a decent amount of it has come about when I’m dozing off before falling asleep and feeling what my hands want to do next. An awful lot of my interaction with the piano is a physical one, like a handcraft. I do tend to be manually oriented; my hands are rarely still.