John Mayer performs on stage at O2 Arena on June 9, 2014 in London, United Kingdom.
{"Image ImageDescription": "LONDON, ENGLAND - JUNE 09:  John Mayer performs on stage at O2 Arena on June 9, 2014 in London, United Kingdom.  (Photo by Rob Ball/Redferns via Getty Images)", "Image Copyright": "2014 Rob Ball"}