He says: "I think there's still some great young bands around - we've got a lot of respect for the younger bands. You can still learn from them because they're creating new parts of heavy metal. Every year, every decade it changes but the backbone is still heavy metal.

"If we've inspired some young bands, that's great, and it makes us proud. We're not stupid, we listen to the young bands as well, and we learn from them. We don't copy them but we get inspired."