If you had access to a time machine, what concerts would you go back to see?

I have seen so many prob near a thousand 
so many i would love to see again...

i would love to go back to Knebworth 1990 just so that this time i might remember not to forget my bag with concert t shirts etc in a locker at the train station

i still wonder to this day if that actually sent the bomb squad in to open the locker that i left behind..

Stephen Bruton with the Resentments on any old Sunday evening @ Saxon Pub in Austin.

I have seen so many wonderful concerts.  Certainly, I have missed some good ones, too.  The one concert that made the most significant impression on me and the one I would most love to be able to see again is The Who doing their North American Tour of Tommy.  I saw this concert in 1970, right about when Live At Leeds was first released (the concert show of Live At Leeds).  What an all-day event that was.  First up was Blues Image, next up was John B. Sebastion, next up was Jesse Colin Young, next up was Leon Russel, and then finally The Who.  What a day for a 16 year old!

@boothroyd, good choice with Stephen Bruton. I wish I would've caught Gary Clark, Jr in the local clubs when I had the chance. I heard about The Shady Grove and Threadgills closing down. Man, it looks like the world is probably gonna be a boring place when things get back to normal. 

in the 50's sometime, my wife and I were in Montreal and noticed that Johnny Cash and his whole entourage was going to play at the Montreal Fair .....got tickets (cheap even in those days).... only sparsely attended....super great show.