“I feel bad because I have thumbs like a mile long,” Mayer said at the LA Sob Rock tour stop ... on to flawlessly play “Neon,” only as John Mayer and his mile-long thumbs can do.

John Mayer is one of the most well known singer-songwriters of his generation, so it shouldn't come as a surprise that the "Gravity" crooner's net worth is as high as it is. Mayer is known not only ...