When Keith Spera interviewed Irvin Mayfield after one of his birthday gigs at the Little Gem Saloon in December, Mayfield said, “I’m trying to do the best I can do, doing my job, when I get up there…. When you’ve got kids, when you’ve got to pay the bills … that recording session doesn’t care about Entergy. Practice doesn’t care if it’s Christmas—you still have to practice….