Like many people, I had some formal musical training (violin) when I was pretty young and left off serious study about mid-college. I don't consider myself a musician.
Now I find myself with sudden access to a piano. I do not play piano; I never have. I have, however, tried to pick out music on pianos many times. It's the sort of thing I find irresistible: there is the music, there is the keyboard. See what you can realize just by taking a stab at it.
It's startling to me to notice what is and is not difficult about it to me now, in contrast to earlier periods in my life. Reading bass clef seems more natural than it once did. Reading two lines together seems easier. It seems less necessary to look at the keyboard than it once did. On the other hand, I'm far more aware of my lack of fingering technique, and the limitations it imposes, than before. And I can feel the effects of typing a dissertation in my hands.
It seems the relationship between my brain and my hands has changed without my noticing. Hello, my fingers; we meet again.