This week’s featured title comes from Henri Dora. “Puzzle March” is illustrated with the image of a refined gentleman hard at work on a puzzle whose solution would seem simple enough: to put the numbers one through fifteen in order. Our distinguished fop is nonetheless frustrated, frazzled, and finally driven mad by his inability to find the solution. In the Muse suggests that pianists faced by this charming piece might gnash their teeth and otherwise summon personal experiences of anxiety in order to inform their interpretation. But please: remember to take your blood pressure pills, and no more insoluble puzzles before bedtime.