American singer, songwriter, and guitarist whose melodic, often soft rock earned him commercial success and a number of Grammy Awards in the early 2000s, paving the way for similar success in a blues-based vein.

Having taken up guitar playing as a teenager, Mayer briefly attended Boston's Berklee College of Music but never completed his studies. Moving to Atlanta, Ga., he played frequently in local clubs with a band and as a solo act. In 1999 he independently released his debut EP, Inside Wants Out. After a 2000 performance at the South by Southwest music festival in Austin, Texas, he signed with the Aware record label, which released the full-length album Room for Squares (2001). Columbia Records repackaged the album with additional material for a much higher-profile national release later in 2001. The song “Your Body Is a Wonderland” became a major hit on adult alternative radio stations and earned Mayer a Grammy Award for best male pop vocal performance. Mayer's next studio release, Heavier Things (2003), topped the Billboard pop chart and featured the hit “Daughters,” which was honoured with two Grammy Awards, including song of the year.

Having established himself as a major presence in the world of adult alternative rock, Mayer sought to broaden the scope of his sound; incorporating his longstanding interest in the blues, he formed the John Mayer Trio, and he also collaborated with rappers Common and Kanye West (West, Kanye). Continuum (2006), reflecting this new approach, earned Mayer a Grammy for best pop vocal album (to go with one for best male pop vocal performance for “Waiting on the World to Change”) and climbed to number two on the Billboard pop chart.