John Mayer arrives for the 'Late Show with David Letterman' at Ed Sullivan Theater on August 19, 2013 in New York City.
{"Image ImageDescription": "NEW YORK, NY - August 19: John Mayer arrives for the \"Late Show with David Letterman\" at Ed Sullivan Theater on August 19, 2013 in New York City. (Photo by Donna Ward/Getty Images)", "Image Copyright": "2013 Donna Ward"}