Im sure there are many that i could name...and probably will if this thread stays active....but for now..
JOHN BONHAM
Freddie Mercury
I love queen, great band!
The Doors x or Jimi Hendrix omg serious edit after reading posts i want Freddie Mercury back too xoxo Highlander songs were amazing x
The Elvis from the "in between years" from when he started and before he died.
Jim Morrison because he had it all, especially the way he looked in his leather pants. Second choice, Janis Joplin, I can't comment on how she looked in leather pants though.
Jim Morrison....his music is awesome and he was a great storyteller...love his music. Very hot looking too...yummy...
Tough one, maybe Roy Buchanan, maybe Duane. No telling what either of them would be playing now. Have to say I have seen a lot of good choices though.
Keith Moon, see if he can last longer second time around :-) ....joking of course; I'd being back Michael Hutchence, he is such an underrated artist and his creative powers were lost from us far too soon.
Michael Jackson. . .ain't no better.
Woody Guthrie
Johnny Cash
Only one? Hmm.... The Beatles. The dead ones, that is. If they got back together. lol
It is hard not to want Freddie Mercury and Jim Croce back like so many others. I liked the early Roy Orbison immensely.
Ooohh that's a toughy... I'm gonna have to go with Billie Holiday. *sigh the things i'd do to see her perform live
Virtually impossible for me to choose only one, Kurt Cobain, Jim Morrison, John Lennon, Jimi Hendrix, Randy Rhoads,Duane Allman, Syd Barrett, Layne Staley, Johnny, Joey and Dee Dee (hey I loved the Ramones, LOL), so many more!! But if I have to, then Freddie Mercury. The man had the most beautiful voice. He was not just a rock singer, he could sing anything. As much as I don't like Opera, if Freddie was performing it, Id go!
I like some of the options already suggested. Jim Croce would be one. Freddy Mercury is another.
My personal first choice would be Roy Orbison. Love his voice and his music and he died just as his career was taking off in a big way again through the Travelling Wilburys and other projects that he was involved with over the late eighties (e.g. the Black and White Nights concert video)
Another would be Jeff Buckley. One of those "died way too young" artists (1966-1997) who could have given so much more than he had time to.
It's a toss up between Ronny James Dio and the master axe grinder Randy Rhodes
But, I have to think they're sitting in a bar, out there somewhere, jamming with Jimmi Hendrix and Freddy Mercury
Lets figure out how to make reanimated potion & have back from the dead blow out 
