
Polish black-death metal veterans MASSTERON have teamed up with Decibel Magazine for the premiere of “Achronon”, the new single taken from their forthcoming debut full-length album, “Second in the Spheres”, due out on September 24th, 2026 via ATMF.
With its title suggesting a reality beyond the constraints of linear time, “Achronon” offers another glimpse into the hostile and uncompromising world shaped by MASSTERON. The track moves with a sharp, muscular intensity, its riffing constantly pushing forward while sudden shifts in pace and atmosphere prevent the song from settling into a predictable pattern. The production retains the physical immediacy of the band’s live-in-the-studio approach, allowing the guitars and rhythm section to hit with an organic, almost confrontational force.
Stream “Achronon” HERE.
Formed by musicians with years of experience within the Polish underground scene, MASSTERON channel the savage spirit of late-’90s Polish black-death metal while avoiding the temptation of simple nostalgia. Drawing inspiration from the primal intensity of early Azarath, Inquisition and the raw force of Aura Noir, the band looks back to the genre’s foundations with the perspective and awareness of seasoned musicians.
“Second in the Spheres” is not an exercise in recreating the past, but a refined expression of everything that made extreme metal dangerous in the first place. The album consists of six tracks recorded live in the studio, capturing the immediacy and physical impact of the band’s performance without relying on artificial enhancements, excessive editing or programmed perfection.
However, rawness does not mean carelessness. MASSTERON avoid the common trap of mistaking a deliberately rough sound for authenticity. Beneath the hostile atmosphere and old-school spirit lies a meticulous approach to songwriting, where every riff, transition and dynamic shift serves a precise purpose. The result is a record that feels ancient in its attitude but razor-sharp in execution.

Spanning 37 minutes of relentless black metal fury, “Second in the Spheres” delivers a balance between aggression and control, chaos and structure. The album carries the spirit of a bygone era while proving that experience can transform traditional formulas into something immediate, powerful and lethal.
With their debut full-length, MASSTERON present a statement of intent: a tribute to the roots of extreme metal, forged by musicians who understand its history but refuse to remain trapped in it. “Second in the Spheres” is a first strike built on conviction, discipline and an undying devotion to the ancient flame.
Preorders at this location.
Tracklist:
1. Voice of Fire 4:43
2. True Midnight 6:01
3. Achronon 5:52
4. Strife Eternal 5:38
5. Sidereal Chaoskampf 4:26
6. Omnispherous Majesty 11:30
Line-up:
M. Warmaster – Lightning-bolt guitars & Fiery Voices
Sirious – Drumming Onslaught Blitz Battery
Dethonator – Bulldozer Bass
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