By Neil Shumate, OOTB Publications   For three decades, Chad Gray has remained an impactful vocalist in the metal scene with a distinct ability to seamlessly transition and fluctuate between agressive screams, intense growls and soft, light clean singing.   Celebrating “30 Years Of Madness,” being the frontman and lyricist for both Mudvayne and Hellyeah, Gray took his originally limited solo shows on the road for a 28-date tour that stopped at House Of Blues in Cleveland, Ohio on Wednesday, Sept. 9, with support from Butcher Babies and Devil’s Cut. Gray—with only half of his face painted to dually represent Mudvayne (paint) and Hellyeah (paintless)—sounded great alongside the seasoned full live band, as a supergroup of sorts: Mudvayne touring guitarist Marcus Rafferty, The Word Alive drummer Devin Attard, Oni bassist Nick Villarreal and Las Vegas area guitarist Joe Bonasorte.   There was no MjDawn, Tom Maxwell, Greg Tribbett or Ryan Martinie;...