This is not answering the question, rather telling the first musical performance I saw. I saw Andres Segovia play in the mid to late 1960’s. I remember that they brought out books for me to sit on because I was so short due to being about 5 years old.
My father told me that I was the perfect gentleman through it, enjoying it immensely. I even remember seeing the Grandmaster making his slow way to the stool, was handed his guitar, and he shed about 30 years as he started to play.
I still sigh a bit when I remember that. It left such an impression that I remember snippets of that concert to this day.