What happens when one American legend takes on 12 American classics? If that legend is John Fogerty, the simple answer is musical magic. On The Blue Ridge Rangers Rides Again, Fogerty reinvents such treasures as the Everly Bros.’ “When Will I Be Loved” (a stunning duet with fellow Rock & Roll Hall of Famer Bruce Springsteen), Rick Nelson’s “Garden Party” and John Denver’s “Back Home Again” with uncommon grace and unbridled zest.