Well, at least now we can stop wondering why John Mellencamp doesn't tour the way he used to.  Oh you weren't wondering? Well, apparently the singer suffers from panic attacks that can sometimes leave him unable to perform.

 

"There's no rhyme or reason to it; I'll be up onstage and it'll just hit me, with no warning. That's why I don't play so much anymore. I've had to go to the hospital over it. It's no laughing matter," Mellencamp said.