John Mayer celebrates his birthday on October 16 . Born in Bridgeport, Connecticut, in 1977, Mayer has spent more than two decades establishing himself as one of the most respected singer-songwriters and guitarists of his generation. His breakthrough came with his 2001 debut album Room for Squares , which introduced listeners to songs such as “No Such Thing,” “Your Body Is a Wonderland” and “Why Georgia.” He later expanded his sound into blues and rock, with albums such as Heavier Things , Continuum , Born and Raised and The Search for Everything . Mayer's musical identity has always extended beyond his songwriting. His guitar work on songs such as “Gravity,” “Slow Dancing in a Burning Room” and “Waiting on the World to Change” has earned him recognition as both a singer-songwriter and a highly accomplished guitarist. His career also took an important turn when he joined members of the Grateful De...