Arguably the greatest American songwriter who ever lived, Bob Dylan is still doing his thing at 71. So far, reviews for this spring tour have been positive. Dylan no longer sounds like himself. His voice has become a cragged moan not unlike that of Tom Waits, and his show is more of a theater act. But his new songs retain a sharp lyrical edge, and his five-piece band is always top-notch. On this tour, guitarist Duke Robillard (“Time Out of Mind”) has replaced Charlie Sexton. Don’t expect to hear songs like their album versions, though. Dylan’s eclectic interpretations can be so varied and different from the originals that you don’t recognize the song until halfway through. Americana band Dawes from Los Angeles opens up the show, which takes place April 16 at the Landmark. Tickets range from $37 (student) to $52. landmarktheater.net.