Closet Witch

Mathgrind is an extreme fusion of mathcore’s jagged rhythmic complexity with grindcore’s hyper‑speed, brevity, and abrasion. Expect songs that last seconds to a couple of minutes, filled with whiplash changes, odd‑meter riffs (e.g., 7/8, 13/16), metric modulations, and relentless blast beats. Guitars and bass are highly distorted and tightly gated, favoring dissonant interval sets (minor 2nds, tritones, cluster voicings), rapid taps/sweeps, and sudden stop‑start figures. Vocals range from piercing screams to guttural barks, often delivered in short, cathartic bursts that mirror the music’s cut‑up architecture. Where grindcore pursues speed and ferocity and mathcore pursues rhythmic sophistication, mathgrind deliberately maximizes both—resulting in music that feels simultaneously chaotic and surgically precise.

Blackened hardcore is a fusion between the speed and confrontational ethos of hardcore punk and the icy atmosphere, tremolo riffing, and blast-beat ferocity of black metal. Typically tuned low and drenched in distortion, songs emphasize relentless forward motion (d-beat or blast-driven) while employing dissonant chord shapes, tremolo-picked melodies, and harrowing, high-register screams. Production often favors raw, abrasive textures and cavernous space, bringing a bleak, oppressive mood. Many bands incorporate crust punk’s grit and metalcore’s precision, occasionally folding in post-metal expanses for contrast. Lyrical themes skew toward nihilism, social decay, anti-authoritarian critique, and existential dread, with performances projecting an engulfing, cathartic intensity.

Powerviolence is an ultrafast, confrontational offshoot of hardcore punk that emphasizes whiplash dynamics between blastbeat-speed eruptions and lurching, sludgy slowdowns. Its songs are typically very short—often under a minute—and rely on raw, abrasive guitar and bass tones, barked or screamed vocals, and sudden stop/start structures. Rooted more in punk than in metal, powerviolence differs from grindcore through its stripped-down riffing, anti-virtuosic ethos, and frequent use of hardcore and d-beat rhythms alongside shocking tempo drops into sludge-influenced breakdowns. Lyrics tend to be anti-authoritarian, socially critical, or nihilistic, and the style is strongly tied to DIY culture, lo-fi aesthetics, and an intentionally uncompromising sound.