Suggestive, unmistakable, and somewhat disturbing, like the sound of car tires on a gravel road, describes Lucinda Williams’ voice. She was undoubtedly the big star of Azkena Rock Festival in 2016, being part of a lineup that included huge figures like The Who. Her talent has earned her her own chapter in the history of music, as well as a legion of fans including names like Tom Petty and Mary Carpenter, who went on to cover her songs, and Robert Redford, who scored The Horse Whisperer with several of her compositions.