MAMMOTH GRINDER returns with Undying Spectral Resonance, a five-track EP that intensifies their signature blend of punk-infused old-school death metal. Recorded by founding member Chris Ulsh, who performed all instruments and vocals, and produced by Arthur Rizk in Philadelphia, the EP builds on the raw power of their 2018 release, Cosmic Crypt. Thematically exploring supernatural energy and morbid gateways between worlds, the music delivers grime-soaked riffs and relentless pacing. Featuring a revamped live lineup and a guest solo by Rizk, this edition is pressed on a limited run of 1168 Cyan Blue and Red Galaxy Effect Merge vinyl records, capturing the band’s fierce evolution in metal brutality.