Well, it may be rare, but it's certainly imaginable. Five years ago, I really loved Avril Lavigne's voice and enjoyed listening to her latest album, and today I still do. I really like how much Avril hasn't changed the root of her sound. She's still the same artist to me. Vanessa Carlton has done some venturing, but even though she has taken lots more freedom lately, she still seems like the same artist she's always been, too. Some artists, though, do something completely revolutionary their second or third time out, and sometimes it comepletely alienates me as a listener and possible fan.