Carrying elements of doom and sludge metal, Mass & Volume doesn't have so much staying power going for it - which is a bit of a drag since it's an EP, nonetheless. "Red Tar" is as dark as it is crushing, but that's all there is to the track; the one preceding this is hardly what anybody would call 'sonically mean-spirited'.
An odd change for PxDx. I hope they don't continue in this direction after this experiment. "Red Tar" is great towards the end, but all of the album preceding that point is just messy, droney garbage. They could have tried a little bit harder to make it interesting.