A perfect Sunday morning playlist of delicate melodies and hushed guitar. Bill Callahan grounds “Small Plane” with a modest, lovely metaphor for coupled contentment, while Bon Iver’s keening, just-out-of-focus words reach for the ineffable. Fleet Foxes wrote arguably the defining song of the 10s with “Helplessness Blues,” a plea for purpose in an enormous and confounding world; Sufjan Stevens also wrestles with weighty questions on “Casimir Pulaski Day,” but keeps his focus smaller, keying in on tiny details that will have you weeping alongside him.