Coldplay at the 2011 Lollapalooza. In the videos here, they're performing "Clocks" and what appears to be a new song named "Charlie Brown." I admit I'm not the most conversant person on Coldplay, but web site Pop Dust mentions that this is a song that the band debuted on Jimmy Kimmel on Thursday night. Coldplay were the Saturday night Lollapalooza headliner, and it shows by the size of the audience.
Coldplay also did a small cover version of the song "Rehab" by Amy Winehouse before launching into the song "Fix You."