Isis pushed the envelope so far on 2002's Oceanic and 2004's gloriously pretentious concept album Panopticon that they spawned countless imitators, which is the greatest form of flattery in some quarters. In the Absence of Truth is the fourth full-length from Isis. This set is not a brave leap forward -- most of us haven't caught up with the last one, and Oceanic spawned an even more experimental set of remixes in 2005 -- but a further look up the holy mountain to a new plateau, a hike to sacred ground.
The road continues for post-Neurosis metalgazers Isis. On their fourth full-length, they continue to refine the basic materials – drone, dirge, riff, and (more recently) melody – that have preoccupied them for nearly a decade. Significantly or not, they now rarely refer to themselves as a metal band, preferring instead to describe themselves as experimental, psychedelic, and progressive.