I have a few that stand out.
1970-something, I saw John Denver, in the round, at a place that no longer exists, McNichols Arena in Denver, CO. His voice and writing was inspired! There are song of his that still make me cry. Annie's Song, Calypso (which he wrote after being with the great Jacques-Yves Cousteau)...I could go on for days.
Sometime in about 1976 I was allowed to "go to a show" without a chaperone. My BFF Kelly and I saw (don't laugh) The Bay City Rollers.
I've seen Neil Diamond 3 times. Great shows. Lots of dancing in the aisles.
The greatest, however, was an outdoor venue called Thunder Mountain Amphitheater. We saw Randy Travis. August, 2010. The kids were with us, and they knew all the words. All. The. Words. It was the best!