I know we've had threads on how many places/states people have visited, and growing up in the Detroit area, I was fortunate to be able to see numerous concerts (that's why my hearing is so bad) and that it might be fun to list concerts, broadways shows, etc., that you have seen.
In no particular order:
Moody Blues (4x)
Alice Cooper
Bob Seger
Aerosmith
Queen
Fog Hat
Bachman Turner Overdrive
Fleetwood Mac
Barry Manilow
Neil Diamond
Elton John (3x)
Willie Nelson (2x)
Ted Nugent (2x)
Journey
Foreigner
Beach Boys
Rolling Stones
Iggy Pop
Humble Pie
REO Speedwagon (3x)
Eddie Money
Mary Wilson (Supremes)
Production of Hair
Spirit
Pink Floyd
Chuck Berry
Emerson Lake & Palmer
Dave Mason
Yes
John Cougar Mellencamp
Neil Young
Gordon Lightfoot
On my bucket list (doubt that I'll ever make it):
Kid Rock
Keith Urban
Newsboys
Guns 'n Roses
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