My Who experience
I was fortunate enough to see The Who's first US concert. They were the opening act and no one knew who they were or the way they ended their shows. Whoever booked them as a lead off act should have been fired by the headliners. The show occurred in Providence, RI. When they closed the show with My Generation, no one expected what happened. It was complete chaos with police and firemen on stage for crowd control and to extinguish things.
Then the headliners came on...Herman's Hermits. The rest is history.
"Tell me what you eat, and I will tell you what you are."