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On the schedule
Inside the performance
Onstage company
Documented collaborators
Hailing from Runnemede, New Jersey, Jettison Greymatter forged a name in the death metal and deathcore scenes with a relentless blend of brutal riffs, guttural vocals, and machine-like precision. Led by Mikey Tyler on vocals and featuring Josh Collins and Chris O' Dowd on guitars, with Jeff Costello on bass and Kevin Koller on drums, the band has carved a niche for fans who crave heavy, uncompromising metal with a dark, melodic edge.
The live experience
What reaches the room
Weayou’ve got a friend in the business for finding records and tours—here’s a concise, insider-style overview of Jettison Greymatter, including their latest release and where to catch them live when dates surface.
Onstage company
Documented collaborators
Biography: Jettison Greymatter emerged from the New Jersey metal scene, delivering a blend of death metal and deathcore that emphasizes heavy, groove-laden riffs, aggressive tempo shifts, and brutal vocal delivery. The current lineup features Mikey Tyler (vocals), Josh Collins (guitars), Chris O' Dowd (guitars), Jeff Costello (bass), and Kevin Koller (drums). The band’s origin in the greater New Jersey area situates them within a lineage of hard-hitting regional metal acts, while their sound incorporates influences spanning classic death metal to modern extreme metal sensibilities.
Onstage company
Documented collaborators
Discography Highlights: The band’s studio output starts with the 2009 release Swimming in Eyes, followed by the 2021 album Tempest. They also release EPs including Recluse (2006, Gomek) and Tachycardia (2015, independent). The latest release, the Tachycardia EP (2025), is available across major streaming platforms, keeping fans engaged with fresh material between full-length records.
The live experience
What reaches the room
Upcoming Tour Information: Publicly listed tour dates for 2025 have not been published. We’re keeping an eye on official channels for announcements and secure your seats as soon as shows emerge. In the meantime, you can stay connected for the latest news and tour updates via the band’s official pages below.
Artist note
A sourced detail
Socials & Official Links: For the most accurate news and new releases, follow Jettison Greymatter on their official social accounts and check their official site for updates. We’ve linked their profiles below to help you stay in the loop.
The essentials
The records
The hits
Biography: Jettison Greymatter emerged from the New Jersey metal scene, delivering a blend of death metal and deathcore that emphasizes heavy, groove-laden riffs, aggressive tempo shifts, and brutal vocal delivery. The current lineup features Mikey Tyler (vocals), Josh Collins (guitars), Chris O' Dowd (guitars), Jeff Costello (bass), and Kevin Koller (drums). The band’s origin in the greater New Jersey area situates them within a lineage of hard-hitting regional metal acts, while their sound incorporates influences spanning classic death metal to modern extreme metal sensibilities.
Discography Highlights: The band’s studio output starts with the 2009 release Swimming in Eyes, followed by the 2021 album Tempest. They also release EPs including Recluse (2006, Gomek) and Tachycardia (2015, independent). The latest release, the Tachycardia EP (2025), is available across major streaming platforms, keeping fans engaged with fresh material between full-length records.
Upcoming Tour Information: Publicly listed tour dates for 2025 have not been published. We’re keeping an eye on official channels for announcements and secure your seats as soon as shows emerge. In the meantime, you can stay connected for the latest news and tour updates via the band’s official pages below.
Socials & Official Links: For the most accurate news and new releases, follow Jettison Greymatter on their official social accounts and check their official site for updates. We’ve linked their profiles below to help you stay in the loop.
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