The Commadors, I was in the 8th grade. They actually came to town every year for several years and we went every time. Their concerts were a lot of fun with everyone dancing and having a great time.
As a teen, I saw Alice Cooper, Peter Frampton, Jefferson Starship, and Aerosmith. I liked them all, but the Commadors was really the most fun. (some of the others were more about what was "passing" around the stadium than it was the music, especially Peter Frampton)
DD's first was Taylor Swift, she was 11. Younger ds saw Aerosmith at 14. Older ds was older but he only wanted to see rappers and we didn't feel comfortable letting him go to some of their shows until he was older.