My impression was, he's walking as though he's made of glass, and if you should touch him he would just shatter apart. I don't know if it was an act or what, but it sure was effective.
My aunt had a season ticket for the Friday afternoon concerts, and I would go down for lessons. My lessons were Saturday morning.
Just to see him come on the stage was an event. They had very high risers, and back a little bit, so he'd walk around behind the risers and right across the front of the stage to the podium, remember?