This time around , amid some changes -- founding drummer David Silveria is on hiatus to become a restaurateur .
The Matrix left the project early in the recording process -- the band has crafted perhaps its most musically serious work since 2002 's Untouchables .
This time around , amid some changes -- founding drummer David Silveria is on hiatus to become a restaurateur , and The Matrix left the project early in the recording process -- the band has crafted perhaps its most musically serious work since 2002 's Untouchables .