Bob Dylan is at his best when his songwriting is fuelled by anger. From the political outrage of “Masters of War,” the personal outburst of “Like a Rolling Stone,” the lovelorn bitterness of “Idiot Wind” and onward into the religious warfare of “The Groom’s Still Waiting at the Altar”: his poetry grows more visceral and his voice more biting when there’s an undercurrent of rage. “Pay in Blood,” perhaps the best track on his 2012 album Tempest, is a case in point.