It’s no easy task to sum up the long-lasting and eclectic career of the mercurial Rod Stewart, but this 31-track collection does an admirable job. All the major landmarks from his solo output, up to the early ’90s, are laid out here: the bristling folk-rock story songs (“Maggie May”), the big, heart-thumping ballads (“Sailing”), the hip-shaking disco era (“Da Ya Think I’m Sexy?”), the nervy New Wave years (“Young Turks”), and a selection of his finest covers (“Downtown Train,” “This Old Heart of Mine”).