Few songwriters make music that’s as affecting and seemingly effortless as Paul McCartney’s. This collection from his solo years showcases his colorful and optimistic pop songs (“Let ‘Em In”), strutting rockers (“Live and Let Die”), and those immaculately desolate ballads (“Maybe I’m Amazed”). Always led by melody, his songwriting follows an eccentric trail through folk balladry (“Mull of Kintyre”), ‘50s rock (“Let Me Roll It”), and sparkling pop-prog (“Band On the Run”), with a melancholy undercurrent that leaves a stain on the heart (“Junk”).