Simple really, what well known bands formed 1975 and earlier have you seen live? (Individual "solo" artists don't count even if they had/have a band, as the individual wasn't formed as a band at a specific point)
My list:
Uriah Heep
Deep Purple
Black Sabbath
Pink Floyd
The Stranglers
Judas Priest
Iron Maiden
Motorhead
Accept
Alice Cooper
Status Quo
Queen
Ultravox
Kraftwerk
Magnum
Crosby, Stills & Nash
Foghat
Canned Heat
Y & T
The Boomtown Rats
The Skatalites
Booker T. & the M.G.'s
Neil Young & Crazy Horse
Bookmarks