On More Fast Songs About the Apocalypse, electronic-music stalwart Moby continues his turn toward punk, ditching his trademark chill downtempo for aggressive, over-compressed guitars. He sounds energized, but something awkward occurs when the aging musician rejoins the mosh-pit fray. The lyrics suggest that Moby feels he missed his chance at the musical/spiritual youth he’s only now living out — there are many farewells and tears in glum songs like “A Softer War” and “It’s So Hard to Say Goodbye.” Is the album addressed to an old self, or a crumbling world? Whatever he is overthrowing, the rebellion feels belated, more a latter-years slackening of the 9-to-5 necktie than a true call to arms.