On ‘Marrow Deep,’ Mastodon channel staggering grief into a cathartic new era, their first album without Brent Hinds
Grief has always been Mastodon’s forge, but Marrow Deep tested even them. The Atlanta progressive-metal titans released their ninth album on August 28 via Loma Vista Recordings, and it arrives buried under an almost unthinkable amount of loss. It is the band’s first full-length without founding guitarist and vocalist Brent Hinds, who left the lineup acrimoniously in early 2025 and was then killed in a motorbike accident on August 20, 2025. That the surviving members turned this wreckage into one of the most emotionally charged and sonically expansive records of their career is the whole story.
The circumstances would have flattened most bands. Beyond Hinds, drummer Brann Dailor lost his mother in February 2025, and bassist Troy Sanders has said the song “In the Ruins” drew in part from the stress of his family being displaced by Hurricane Helene in 2024. Writing an album under the shadow of death is not new for Mastodon. 2009’s Crack the Skye memorialized Dailor’s late sister, and 2021’s Hushed and Grim honored their late manager Nick John. But the sadness compounded here in a way that could have swallowed the record whole. Instead, it deepened it.
A New Lineup, a Wider Sound
For the first time in the band’s 26-year history, Marrow Deep features a new lineup, and the additions are transformative rather than merely functional. Canadian virtuoso Nick Johnston steps in on lead guitar and proves at least as capable as Hinds, while keyboardist João Nogueira, now a permanent member, gives the album more lead synth and keyboard presence than any Mastodon record before it. The result pushes the band’s long-standing prog vocabulary even further to the fore, with audible echoes of Pink Floyd, Deep Purple, and Yes threading through the solos.
Crucially, this is not a retreat into softness. Marrow Deep is Mastodon’s most sonically encyclopedic album, balancing that widescreen prog ambition against a genuine return to the feral heaviness of their formative years. There are flashbacks to their harder-edged early sound, though anyone hoping for a straight rewind to “March of the Fire Ants” will be disappointed. This is a band moving forward while carrying its history in its bones, the raspy bellowed vocals, the viscous riffs, the off-kilter rhythms that make headbanging a genuine hazard, all present and sharpened.
Outsmarting the Fates
The album’s emotional and conceptual spine is Greek mythology, specifically the three Fates who determine mortal destiny. Dailor has framed the record as being about two people who spent their lives outsmarting death. “My mom was pretty sick for most of her life, but she kept dodging bullets left and right over and over again,” he explained. “And Brent cheated death more times than I can remember.” That theme culminates in the sprawling closer “The Three Fates,” the album’s longest and most expansive track, featuring spoken word from Clutch’s Neil Fallon and tying the whole record together.
The most direct tribute is “Your Ghost Again,” a lead single that, tellingly, is not a shred showcase for Johnston but an act of remembrance. When Sanders growls “we don’t get over this” on “In the Ruins,” the pain is not performed, it is lived. Rolling Stone aptly called Marrow Deep the band’s “Shine On You Crazy Diamond,” a tribute to a founding member who was essential to the beginning even after he lost his way.
Marrow Deep is not flawless. A few critics have argued it treads familiar territory rather than breaking genuinely new ground, and longtime fans will spend the rest of the year debating exactly where it ranks. But the emotional weight it carries, and the grace with which it carries it, is undeniable. If Crack the Skye began Mastodon’s second era, Marrow Deep is the thunderous big bang of their third. Out of the deepest loss of their careers, Mastodon have made a monument. Marrow Deep is out now via Loma Vista Recordings.
