POPSUGAR Celebrity John Mayer Slide Picture of John Mayer Performing in Chicago Best Face Forward by Celebrity 8/16/10 0 Shares Like us on Facebook John Mayer was lost in song on Saturday during a performance in Chicago. Source: WENN.com Read More HotJohn Mayer John Mayer The Most Surprising Celebrity Sex Confessions John Mayer Dreams Up Justin's Cookie Dough Almond Butter Surprise! Ed Sheeran and John Mayer Are Actually a Great Duo Taylor Swift Might Not Be Impressed by John Mayer's Joke About Her Get the scoop with our daily newsletter Sign up for our daily newsletter. TV A-Listers Movies Young Hollywood Sign up with Louie 4 years Yuck. Louie 4 years Yuck.