For those of us over 60..

The Jefferson Airplane, Little Feat, R.E.M.

Joe Walsh, solo.
2nd choice.... Traffic.

55 next week,, gotta go with The Stones, capped at Some Girls.  Lucky enough to see them once. Tie for 2nd with The Grateful Dead (100+) and The Clash (1).  Wait, 3 way tie, Bob Marley & the Wailers (0), that way I get Peter Tosh (1) to boot..  I know the question was for one, but I'm just a punk kid of 55, I can bend the rules............(I just got home from The Jesus Lizard's possibly last show ever and they gave a class for the kids today on how to do it, whatta great time.)

Moody Blues, Jethro Tull, Uriah Heep, Pink Floyd, Emerson Lake and Palmer, Crosby Stills Nash and Neil Young solo, Cat Stevens, Al Stewart, Gilbert o Sullivan, Christopher Cross and the great thing is with my Hi Fi setup now in my dedicated sound I still listen to them only now I fully realise just how good they were

Bachman Turner Overdrive -  gimme your money please?