Comment from punctualtroubadour
– Well, it’s a thing i’ve some experience with, LOL! Regardless of one’s technical prowess, rehearsing and performing with others is the best and most expedient way to progress. And being super relaxed. Really funny, what you describe as “frankenstein’s hand syndrome,” i have called “spaghetti hands or fingers”. I suffer from it most when I am unfamiliar with changes or being rushed, or having anxiety. Best cure for me has been to have the changes down cold and/or take a deep breath and pause. Thanks to mad repetition, I can learn changes on the bandstand on the fly more quickly than in the past. But, of course, depends on the gig what kind of risks and liberties to take…..relax, relax, relax….