The Mastodon Marrow Deep review conversation cannot begin anywhere other than loss. This is the first Mastodon album without Brent Hinds, who quit the band last March and died in a motorcycle accident in August 2025, as Angry Metal Guy reports. The record arrives, then, carrying a weight beyond its 63 minutes, a tribute shaped not in sentiment but in sheer, unrelenting sound.
The shadow of mortality has already fallen across 2025’s biggest metal releases. At The Gates processed grief with Tomas Lindberg’s final record, The Ghost Of A Future Dead. Mastodon answer with something rawer: a return to the metallic brutalism of their earliest work, executed with 25 years of hard-won craft behind it.
Marrow Deep arrives as Mastodon’s most uncompromising metal statement in years
Brent Hinds, by his own admission to the press, was never entirely comfortable with heavy metal. He pushed the band toward psychedelic, progressive and punk territory, broadening what Mastodon could do. So the sheer, skull-flattening heaviness of Marrow Deep carries an irony that the band presumably feel keenly. Without him, they’ve made the most devotedly metallic record in two decades. Whether that’s a grieving tribute or a natural recalibration probably depends on where you stand.
The opening track, Barbarian’s Blood, leaves no room for ambiguity. It marauds through Neurosis-damaged sludge riffs, d-beats and exuberant guitar harmonies with a pugilistic intensity that signals the shape of everything to follow. Poisonous Weapons maintains the pressure, tense chords and hammering drums refusing to let up. Notably, there’s no guitar solo until the fifth track, Out Like A Lamb, which reads as a form of restraint in honour of the player no longer in the room. When it arrives, new guitarist Nick Johnston brings Satriani-schooled precision to a full minute of cosmic, melodically melancholic heroism that earns its place several times over.
Across its comparatively concise 63 minutes, the record doesn’t drop. Every song pulls its considerable weight. Compare that to 2021’s double-album Hushed And Grim, itself born of sorrow following the death of long-time manager Nick John: ambitious and audacious, but attention flagged on a handful of mid-tier tracks. Nothing here is mid-tier. The artisanal consistency is one of Marrow Deep’s most quietly impressive qualities.
A guest list that reads like a heavy rock hall of fame
The band haven’t made this alone. Snakes For Dinner features Queens Of The Stone Age frontman Josh Homme adding an intergalactic Moog presence to what is already one of the record’s more unsettling grooves. Closing epic The Three Fates layers burbling electric piano and dogfighting Hammond organ before a slavering vocal from Clutch’s Neil Fallon pushes the whole thing into genuinely epic territory.
Then there’s The Vanishing, which features a bass intro from Geezer Butler. It’s the closest Marrow Deep gets to a chill-out zone, bluesy guitars and spacey vocals slowly building to a tumultuous crescendo. Having Butler on the record is a statement about lineage and belonging that no press release could match.
The prog inflections that have defined so much of the band’s catalogue over the past 15 years haven’t vanished entirely. Quirky melodic notes soothe the jittery dynamics of Your Ghost Again, and there are fleeting moments of 70s-flavoured light relief scattered across the record. But they feel like seasoning now, not the main course. The brute-force riffing is back at the centre of what Mastodon do, and a significant portion of their fanbase has waited a long time to hear it.
Mastodon have never really put a foot wrong across 25 years. The progression from the ravenous energy of their early records to whatever 2025 represents has been one of heavy music’s great ongoing stories. Marrow Deep doesn’t push into bold new territory, but in the wake of genuine tragedy, revisiting old ground with this level of purpose and profundity is exactly what was needed. The record is out 28 August via Loma Vista Recordings. Go and hear what grief sounds like when it has a drummer like Brann Dailor behind the kit.
