Mastering those 'Hold' commands can help avoid those 'oops!' moments. I'm playing in a band with a girl singer who LOVES to change keys by just a few semi's, often on tunes that I've played for decades in the original, things like Superstition, Play that Funky Music, things like that. I just generally hit the t'pose button, but all hell breaks loose if I forget it is on if I decide to change registrations mid song

Presetting the Hold button to preserve Transposition cured that, though. But I STILL have to remember to disengage it when I go to the next song!