Saw James Taylor in concert in the 70's, a real experience.
I mentioned seeing Uriah Heep earlier. Figured I'd expand on that. These were basically studio musicians with little or no stage experience at that time. They had little more than their instruments and a very crudely done painted canvas back drop. All but one of then seemed a bit timid in front of a live audience. A guitarist was the exception, he was having a ball.
Despite all this they gave a great performance, their music doing the talking.
Perhaps the first concert I went to was Leon Russel , I think it was mainly the circus album music. Mamma Cass made a surprise visit. She had been changing planes at the airport and heard Leon Russel was in town.
She came on stage singing, accompanying Russel , which was a surprise to him, he had no idea she was there. He was seated and she came up and sat on his lap, which had to have nearly collapsed the chair.