“ISIS has reached an end. It’s hard to try to say it in any delicate way, and it is a truth that is best spoken plainly. This end isn’t something that occurred over night and it hasn’t been brought about by a single cataclysmic fracture in the band. Simply put, ISIS has done everything we wanted to do, said everything we wanted to say.”

The obituary states, that the end is not instant as the band will fulfill its touring commitments.

“In more immediate and practical terms the tour we are about to embark upon is indeed our last. We are hoping that these final live rituals can help us bring a close to the life of this band in a celebratory and reverent way, and also provide us with a chance to say goodbye to many of those that have supported us over the years.”

To see ISIS live, for one last time, you need to check out one of these shows:

May 26, 2010, San Diego, CA Casbah
May 29, 2010, Eugene, OR Wow Hall
May 31, 2010, Vancouver, BC Rickshaw Theatre
June 1, 2010, Seattle, WA Neumos Crystal Ball Reading
June 2, 2010, Portland, OR Doug Fir Lounge
June 4, 2010, San Francisco, CA Great American Music Hall
June 5, 2010, Los Angeles, CA Troubadour
June 12, 2010, Manchester, TN Bonnaroo Music Festival
June 14, 2010, Athens, GA 40 Watt Club
June 16, 2010, Washington, DC 9:30 Club
June 17, 2010, Philadelphia, PA Theatre of the Living Arts (TLA)
June 18, 2010, New York, NY Webster Hall
June 19, 2010, Brooklyn, NY Music Hall of Williamsburg
June 20, 2010, Boston, MA Paradise Rock Club more less
June 21, 2010, Boston, MA Paradise Rock Club
June 22, 2010, Portland, ME Port City Music Hall
June 23, 2010, Montreal, QC Club Soda

It’s that subterranean motif that’s stuck with me the most throughout my many play-throughs of Wavering Radiant. Almost all of the album’s lengthy tracks seem to be occurring in some sacred, underwater space – one that’s alternately animated by shimmering currents and concussive pressure-blasts. That dichotomy – a delicate sound of thunder, if you will – has defined Isis for a long time, but so far, it’s largely been accomplished via acoustic interludes pitted against post-hardcore explosions.

In the Absence of Truth’s keys and effects showed a more unabashed step towards full-on post-rock spaciness, but the sonic palette on Wavering Radiant completes that transformation, and it is stunning. Each track employs stately pipe organs, shimmering tones, and a uniquely flooded bass sound (which I’ve only heard elsewhere on The Cure‘s seminal Disintegration) to cast you down into those depths. On “Hand of the Host,” “20 Minutes/40 Years” and “Ghost Key,” you’ll float for minutes in meditative intoxication, until you’re awakened by the dual leviathans of Turner’s cavernous roar and Mike Gallagher’s dissonant, distorted guitar-tectonics.

In fact, the post-rock stylings and mantra-like compositions are so accomplished and mesmerizing that they actually diminish the metal portions of Wavering Radiant. It’s not always the case – when a track starts out heavy, as with the stuttering gallop of “Hall of the Dead,” or the undulating, uroboric rhythms of “Stone to Wake a Serpent,” (as usual, the song titles are fantastic), it’s arresting and undiluted. And part of it may be that the mix treats both halves equally, so that the contrast isn’t as bruising as you’d expect. Mostly though, it’s just that the metal, when it does come in after an extended prog interlude, seems to be a counterpart first, rather than a compelling element on its own.

To give a good example, go back and listen to “Ghost Trail,” off Cult of Luna‘s 2008 release, Eternal Kingdom. Cult of Luna is frequently labeled as an Isis-clone (and a damn good one, if you buy that line), but they absolutely floored me with that song, which features a 5-minute juggernaut centerpiece of roiling riffs and gorgeous solos. Every time I hear it, I’m simultaenously enraptured and energized – volume cranked, fists pounding the steering wheel, probably going to cause an accident one of these days. Yet I can’t say that about most of these tracks – given how Isis has compartmentalized their identity, it’s one or the other, but rarely both at once.

One song does break that mold in a way, and that’s closer “Threshold of Transformation.” The buried screams below the crush and chug of that song’s centerpiece make them more haunting and cathartic than the bellowing in its normal state. It’s the album’s blackest moment, and then even as the song rises up towards the light with its mellotron-fueled finale, it feels like its duality has truly been earned.

If Isis can return to writing heavier moments that are as transportive and galvanizing as their post-rock side – to go for the heart and the balls as well as the head – then I think a genre-destroying masterpiece is in their future. As for now, we’ve been given what’s still an exquisite, skillful and soulful experience, certain to reward those of you that get properly submerged in it.

 The album, produced by Joe Baressi (Tool, Queens off The Stone Age), will also see a limited edition vinyl version released on Apr. 21. Tool’s Adam Jones contributed guitar to two songs from the new release. More details soon