If one book's done this well, you want to write another one that does just as well. There's that horror of the second novel that doesn't match up.
I just got a call one day from Ringo asking me if I wanted to go out on the tour. It was as simple as that. He was putting together this band and he heard of me in the context of doing this and he gave me a call. I jumped at the chance.
Edge will be missed. It was an honor to share the ring with him, and compete against him.