Country singer and songwriter Willie Nelson rose to prominence at the end of the 1960s and contributed to the "outlaw country" subgenre, which challenged the conservatism of Nashville's music industry. During his lengthy, award-winning career, he has written some of the most popular and memorable country songs of all time, many of which have been covered by a wide range of artists over the last half-century. Now in his 80s, Nelson continues to record, tour, and devote time to charitable and political causes. David Ritz, called the "first call celebrity collaborator" by the New York Times, recently wrote Willie Nelson's bestselling It's A Long Story. He has collaborated on memoirs with, among others, Ray Charles, Aretha Franklin, and B. B. King. His books include Scott Stapp's Sinner's Creed; Nik Wallenda's Balance: A Story of Faith, Family, and Life on the Line; and Messengers: Portraits of African American Ministers, Evangelists, Gospel Singers, and Other Messengers of the Word. He lives in Los Angeles, California.