Coldplay debuted a handful of new songs at the Rock am Ring festival in Nürburg, Germany yesterday, including this uptempo number called "Charlie Brown." If there was every going to be a rock band to name a chiming, anthemic rock song after Charles Schultz's perpetually glum and clumsy comic strip character, it would have to be Coldplay, right? It's a very earnest song, but there's a charming, self-aware bit of humor in Chris Martin invoking the iconic Peanuts sad sack.