Guest list: Jason Aldean, Brad Paisley, Lady Antebellum, Kenny Chesney, Taylor Swift, Rob Lowe, All-American Rejects, The Avett Brothers, Ellen DeGeneres, Gavin DeGraw, Jeff Gordon, Stephanie Izard, Chad Kroeger, Miranda Lambert, Matthew McConaughey, Sean Payton, Lionel Richie, Joe Walsh, Tony La Russa, Sara Evans, Faith Hill, William Shatner, and Kelly Clarkson