So, I would have MUCH Rather seen them as my Sunday finale band! Sources say that Sabbath was originally set to close the show Sunday evening butthe band pulled out right before the lineup was announced 2 days ago. The cancellation was due to Tony Iommi's recent lymphoma diagnosis. So, in came The Black Keys in the final hour to go ahead and headline for Friday. Well, at least that is our best guess, since of the 3 The Black Keys is the smallest. If you'd like to read more of this story click here.