Like Amish just shared, I didn't miss many concerts from 1977 until 1982, Been to may more over the years since then. Hard to pick the most memorable or best. First show and probably the loudest was Ted Nugent Cat Scratch Fever show. I've seen AC/DC several times, Lynard SKynard, Charlie Daniels, Fleetwood Mac, REO Speedwagon, Nazareth, Boston, Eagles, Marshall Tucker, Outlaws, .38 Special, Molly Hatchet, Blackfoot, Bob Seager, Scorpions, Heart, Foreigner, Jethro Tull, Blackberry Smoke. Several of these multiple times. I'm sure I missed some too.
The one band I regret never seeing was Bad Company, Another was Styx and Kansas.
One on my list to see is the Allman Betts Band, several sons from the original Allman Brothers.
I forgot to add, just heard today on my way home Paul McCartney is going to be in Knoxville on May 31st. Tickets will start at $200. I'd love to see him, but not paying that for it.