What English-American heavy metal band active from 2006 to 2010's drummer did Greg Hampton form a new project with in 2011?
Greg Hampton:  In 2011, it was announced that Hampton had formed a new project, 9 Chambers, with ex-Monster Magnet guitarist Ed Mundell, Gov't Mule bassist Jorgen Carlsson, and ex-Black Sabbath/Dio/Heaven & Hell drummer Vinny Appice.
i don't know