"It's almost strange when you tell people, 'I haven't been singing in three years,' and they go, 'I didn't hear about that,' you realise how important you are... You lived out in the woods, Mark Wahlberg in (film) Shooter, getting a beard and all of a sudden you're back and you're like, 'I'm back'. And they're (fans) like, 'Oh, you're here!'" Many John Mayer fans didn't know the singer/songwriter was ill when he underwent throat surgery. The star returned to performing this summer (13).