You can do a lot of living in 70-plus years, and fortunately, country-folk great John Prine has been documenting what he sees for over 50 of them. The album title is redolent of its mood, approaching the twilight years with a sense of wonder and humor. “Knocking on Your Screen Door” counts the blessings of being humble, and “Caravan of Fools” is a not-so-disguised jab at political incompetence. His well-sharpened wit cuts deep across these 10 songs. “Crazy Bone” reminds us all to stay weird, and “When I Get to Heaven” describes a rollicking afterlife after-party: “I’m gonna get a guitar and start a rock ‘n’ roll band/Check into a swell hotel/Ain’t the afterlife grand?”