You're all a bunch of oldies......
If I remember correctly, my first concert was to see Toyah at the City Hall, (saw her a few times), though I saw that many acts in the 80s, not sure now. I was a bit into punk and electro-pop sort of stuff.
Biggest act I've seen? Madonna a couple of times, once in the 80s when she was just another pop star, and more recently spent £300 to see her in Manchester.
Best all round performance, Peter Gabriel, gresat music but visually stunning too.
Bands I wish I'd seen, Queen with Freddie of course, Michael Jackson, would love to see Bowie live, and Prince.