ISIS and Old Man Gloom guitarist Aaron Turner returns with SUMAC alongside bassist Brian Cook (Botch, Russian Circles) and drummer Nick Yacyshyn (Baptists) for a brand new set of heaving, free-form post-metal.

It’s hard to believe it’s been a decade since ISIS called it quits, but that hasn’t stopped guitarist and vocalist Aaron Turner, who’s been releasing solo albums and collaborations almost non-stop. Since 2014, he’s been playing in post-metal trio SUMAC and continuing a few of the ideas that have been simmering since ISIS went their separate ways. “May You Be Held” is growling, technically-minded riffage, augmented with jazz, improv, noise and drone elements that flesh it into a powerful form.

The high point is the 20-minute title track that croaks from heady post-hardcore phrasing and complex, clattering drums into seismic bass rumbles and vocal gargles before landing in the drone zone. A few minutes of sloshing around and we’re being shuttled into the kind of slow-mo riffage Sleep made a green-hued fever dream on “Dopesmoker”. Yeah.