New Orleans bandleader John Moore chose his "Deacon" nickname at the suggestion of a mischievous drummer. At 73, he's one of the city's most beloved musicians. Courtesy of the artist hide caption

itoggle caption Courtesy of the artist

Charley Patton was the grandaddy of the Delta blues musicians, according to Jack White: "He's the one that all the other blues musicians looked up to. He's almost the beginning of the family tree." Courtesy of the Revenant Archives hide caption

itoggle caption Courtesy of the Revenant Archives

For 20 years, the Music Maker Relief Foundation has been supporting indigent musicians like Boo Hanks (left), who recently released a collaborative album with fellow roots musician Dom Flemons. Peter Breslow/NPR hide caption

itoggle caption Peter Breslow/NPR