Jack White made his name as a garage rocker, but he’s just as comfortable around the campfire, and this 26-song collection showcases his deep acoustic catalog. But where hushed lullabies like “We’re Going to Be Friends” once served an important respite function in the White Stripes' repertoire, White’s solo work has used folk-song forms as the foundation for a more elaborate vision: Strumming atop jaunty piano rolls, he belts out “I Guess I Should Go to Sleep” with all the gusto of a Broadway show tune.