 Dylan 's lyrics have incorporated various political , social , philosophical , and literary influences . They defied existing pop music conventions and appealed to the burgeoning counterculture . Initially inspired by the performances of Little Richard and the songwriting of Woody Guthrie , Robert Johnson , and Hank Williams , Dylan has amplified and <unk> musical genres . His recording career , spanning more than 50 years , has explored the traditions in American song — from folk , blues , and country to gospel , rock and roll , and rockabilly to English , Scottish , and Irish folk music , embracing even jazz and the Great American Songbook . Dylan performs with guitar , keyboards , and harmonica . Backed by a changing lineup of musicians , he has toured steadily since the late 1980s on what has been dubbed the Never Ending Tour . His accomplishments as a recording artist and performer have been central to his career , but songwriting is considered his greatest contribution . 
