John Mayer back in spotlight, strumming new guitar

When Grammy-winning singer John Mayer returns to the musical spotlight in 2012, he’s going to let his guitar do his talking. And not just any guitar, it will be a new limited edition, 12-fret acoustic made by C.F. Martin & Co. Mayer and Martin & Co. will unveil the six-string guitar, of which only 25 will be made, on Wednesday at the National Association of Music Merchants annual gathering in Anaheim, California, south of Los Angeles.