Please tell me you've heard of Corrosion Of Conformity. If not, C.O.C. is a band who has been around for almost as long as I've been listening to metal. They started as a hardcore band and, through the years, morphed into a distinctly metal group. I remember hearing them back in the day, around the "Animosity" era, and I was pleasantly surprised when I heard them change their style on "Deliverance" in the 90's. I lost track of them through the 2000s because, as it turns out, they were "on hiatus" from 2006 to 2010.