Masked headbangers Slipknot have released a video of the first live performance of “The Devil in I,” a song off this year’s .5: The Gray Chapter that they debuted at their own Knotfest in San Bernardino, California this past October. The clip shows the nine-piece band convulsing about the stage in red light as flames spew forth from the stage and line the walkways leading up to their drum riser.