Kerry & ??? unplugged, anyone?

With all the talk about Kerry's running mate, a thought occurs about another kind of partner.  Now, we all know that he is trying to overcome a certain perception of stiffness and formality. We also know that he is a very good guitar player.  What about having him do a show with another guitar player, a kind of Kerry & [musician] Unplugged gig.  I think it could kill a few birds with one stone.  We all also remember how well the Clinton sax maniac act went over with younger voters.  I don't see any downside to this.  

Now, name the musician:

I'd love to see him play with Tom Petty.