Although, he'll admit releasing new work isn't what it used to be. "It really makes no financial sense to spend a year or whatever making a record the way Def Leppard used to do it because it doesn't pay in the end because not enough people are buying records," said Campbell.

"So you're spending money that you're never going to see back. Although it is fun creatively. We'll always do that and we enjoy doing that. We've also fortunately gotten better at making records quicker and cheaper, so that just kind of pans out in the end, but it's all about playing live. That's what we do really, really well and that's what we enjoy doing.
- more on this story

Preview and Purchase Def Leppard CDs