OK, lets see....

Ive seen Elton myself, He definately rocks..

In addition..
David Cassidy
CSN
Pink Floyd (twice)
Jethro Tull (3 times. Once I set beside Carrot Top)
Yes
Trapeze
Alice Cooper
Suzi Quatro
Rare Earth
Cher
Seals and Croft
BTO
Jimi Hendrix
Blood Rock
Who
Bad Company
Queen
Kiss
Heart (partied with them after the show)
John Denver
Barbara Mandrell
Oakridge Boys
Exile
Alvin Crow (went to High School with him)

Laz
(oh yeah, went to Woodstock '69)

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Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to slide in broadside , thoroughly used up, totally worn out, and loudly proclaiming --WOW-- What a Ride!