Illinois-based heavy metal rockers Mudvayne raise the roof in their blistering "World So Cold" video (which includes a making-of video within the video). Behind-the-scenes features accompany such tracks as "Internal Primates Forever," "-1," "Silenced," "Death Blooms," "Mercy, Severity," "Cradle," "Nothing to Gein," "World So Cold," "Not Falling" and "Dig." Please note: Contains explicit content.