With 2008’s Gift of Screws, Lindsey Buckingham proved he could make a vintage Fleetwood Mac-sounding album all (largely) by himself. This follow-up is a more typical Buckingham solo set — meaning that the pop mastery is still here, but the overall feel is darker and more insular. He does seem in a more downcast mood than usual, whether that’s due to romantic troubles, advancing age, or the state of the nation (the foreboding “End of Time” alludes to all three). And the best moments here are indeed melancholy: “When She Comes Down” echoes the soaringly sad feel of Mac’s “Walk a Thin Line,” and the closing cover, “She Smiled Sweetly,” has a verge-of-tears vocal that makes it more affecting than the Rolling Stones’ original. With nobody else in the studio, Buckingham alternates stripped-down acoustic numbers with full-band facsimiles. That said, even the loudest songs here — like the topical “One Take,” which includes one of his most ferocious guitar solos ever — don’t detract from the album’s late-night, down-there mood.