...you haven't. Unless you've watched this video of a man
playing his banjo during his Deep Brain Stimulation surgery. Sadly, he was not cured of his banjo habit. There was also a tense moment when a nurse and the anesthesiologist absentmindedly began clog dancing while the surgeon chanted
"Swing your partner, Doe-si-doe! To the brain's deep part we go! It's not far, no country mile, drill that burr-hole mountain style!"
Disaster was averted when they found the patient could not perform a Buck-and Wing, and everyone was brought back to their senses.
I looked into this extensively, and can reassure everyone that playing the banjo has not been added to the battery of tests that a surgical candidate must perform to qualify for DBS. In fact, most teams prefer something soothing, and would appreciate it if patients could render a little light jazz on the pan pipes. Also on the approved list: Bassoons, dulcimers, Irish harps and ocarinas. Needless to say
Theramins are forbidden in most operating rooms.
Must run. I need to work on my rendition of "Foggy Mountain Breakdown" arranged for pan pipes.