"We didn't want to play a single style of music ... We were never interested in being put in any particular box," Corrosion of Conformity bassist/singer Mike Dean told Denver Westword in a recent interview, and man, he wasn't kidding. Since its founding in 1982, the Raleigh, N.C., outfit has always made heavy music but undergone many changes in sound (plus many changes in lineup). Its 1984 debut Eye for an Eye was scrappy, unhinged hardcore punk best paired with circle pits. That was followed by 1985's Animosity, an unstoppable thrash metal classic. Nine years later brought us Deliverance, bad-ass Southern metal with a smirk across its face. Then came 2005's In the Arms of God — something far darker, more delicate, and funereal than any of the previous albums. Finally, 2012's Corrosion of Conformity, and IX, the group's ninth and latest full-length, generally follow the same doomed, mournful threads as In the Arms of God. It's about time for another overhaul.