Bob Marley, 1979 at the Roxy in L.A.
My older brother had a last minute spur of the moment spare ticket, but I was out with some friends and couldn't make it to Hollywood in time.
Didn't think it was a big deal at the time, but never had a chance to see him again - the rest is history.
Led Zeppelin, 1977 at the L.A. Forum.
A friend of mine had tickets, but I was stuck in Arizona going to school at the time.
Eventually saw Plant solo '83 & '85, Page at Arms Benefit '83, The Firm '85, Page solo '89, and Plant/Page '95 twice, but it was not Led Zeppelin no matter what.
Also - I would have loved to have seen Lynyrd Skynyrd pre-airplane disaster '77, but never had a chance.
_____________________________________________________________Rip this joint, gonna save your soul, round and round and round we go......