Biohazard – Shades of Grey (drumcover by Bobrrr) Jul 28, 2015 Cover, Cover Biohazard, Cover Hardcore, Cover Rock, Cover Shades Of Grey, No Holds Barred (Live In Europe), The Best Of, Like 0 Thanks! You've already liked this « Biohazard – State of the World Address (Drum Cover) » Biohazard Business Drum Cover