I was once a classically trained pianist:

My nails cut weekly down to the bit
and internal tongue ta-ta-ta-ta, ta-tee-tee
ta-ta, tom tuned to the metronome.

Daily hours meant:
bent stick straight up
scales and etudes then
sonatas and scherzos and waltzes and nocturnes and preludes and arias

and movements memorized
by fingers that knew the way
and weight of adjusted arms.

What is the value of
a wrong note alone

or amongst many,

of memory incapable
and fingers fallible?