Dylan's lyrics incorporate a wide range of 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 personalized 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 his songwriting is considered his greatest contribution. Since 1994, Dylan has also published seven books of drawings and paintings, and his work has been exhibited in major art galleries.
As a musician, Dylan has sold more than 100 million records, making him one of the best-selling artists of all time. He has also received numerous awardsincluding eleven Grammy Awards, a Golden Globe Award, and an Academy Award. Dylan has been inducted into the Rock and Roll Hall of Fame, Minnesota Music Hall of Fame, Nashville Songwriters Hall of Fame, and Songwriters Hall of Fame. The Pulitzer Prize jury in 2008 awarded him a special citation for "his profound impact on popular music and American culture, marked by lyrical compositions of extraordinary poetic power." In May 2012, Dylan received the Presidential Medal of Freedom from President Barack Obama. In 2016, he was awarded the Nobel Prize in Literature "for having created new poetic expressions within the great American song tradition".