John Mayer is a singer.
John Clayton Mayer ( [ ˈmeɪ.ɚ ] born October 16 , 1977 ) is an American singer-songwriter , guitarist , and producer . His following two full-length albums -- Room for Squares ( 2001 ) and Heavier Things ( 2003 ) -- did well commercially , achieving multi-platinum status . In 2003 , he won the Grammy Award for Best Male Pop Vocal Performance for the single `` Your Body Is a Wonderland '' . After extensive treatments for his vocal problems -- and a two-year hiatus -- Mayer began performing as a singer again in January 2013 , and that year released the album , Paradise Valley . `` Who Says '' is the thirteenth single released by American singer-songwriter John Mayer , and the first to be released from his fourth studio album , Battle Studies .