Ive always loved this Van Morrison performance at The Band's farewell concert The Last Waltz. Ive never seen him look so ebulliant with all his high kicks near the end of his performance.
He reminds me of the normally well behaved kid at school who's being led astray by his more mischievous...
Ravi Shankar tuning his sitar at the Concert for Bangladesh and then receiving applause from the audience who thought it was part of his performance...
Take your pick...Neil Young performing Like a Hurricane, first with wind machine in 1977... and then with a little more gusto minus wind machine in 1986.
I think he may even be wearing the same shirt in both performances but by 1986 had cut the sleeves off....