..just watched the opening 10 minutes of the concert on SKY Arts
recorded in Basel, Switzerland, when Chuck was only 81..

He was still soldiering on through his trademark motions,
but ever the innovator, singing free-form approximations of the melodies,
and playing his guitar in some kind of experimental atonal avant-garde jazz scale tuning..???

His rhythm was spot on, and the muscle memory of his hands
was placing his fingers in all the right patterns on the fingerboard for each song and solo.
But with a hint of a sly grin on his old face, it was almost as if he was daring his well to do Swiss audience
not to politely applaud every 'wrong' note of his bizarre haphazard guitar performance.. ????

.. and that was when he was only 81..