The night that we lost Levon Helm, the great singer/drummer for the Band, Bon Iver played tribute by covering the Band's "Ophelia." One night after that, in their headlining spot at the second Coachella weekend, the Black Keys paid a grand-scale tribute of their own. Inviting former Creedence Clearwater Revival frontman and classic-rock archduke John Fogerty to the stage, the ...