Memento Mori

Black metal is a form of extreme metal defined by fast tempos, tremolo‑picked guitar lines, blast‑beat drumming, shrieked or rasped vocals, and a deliberately raw, icy production aesthetic. Harmonically, it favors minor and modal collections (especially Aeolian and Phrygian), open-string drones, parallel fifths and fourths, tritones, and sparse or suspended chord voicings over blues-derived harmony. Arrangements often employ layered guitars, long-form song structures, and enveloping reverb to create a bleak, otherworldly atmosphere. The genre’s visual and thematic language is equally distinctive: corpse paint, monochrome artwork, and lyrics exploring anti-dogma, nature, pagan myth, cosmic nihilism, and misanthropy. While some scenes have been associated with controversy and extremism, the musical identity centers on sound, atmosphere, and aesthetics rather than any single ideology.

Death metal is an extreme subgenre of heavy metal defined by heavily distorted, low‑tuned guitars, rapid and complex riffing, blast beat drumming, and harsh guttural vocals. Its harmonic language favors chromaticism, dissonance, and tremolo-picked lines that create an ominous, abrasive atmosphere. Lyrically, death metal often explores dark or transgressive themes—mortality, mythology, anti-religion, psychological horror, and the macabre—sometimes with philosophical or social commentary. Production ranges from raw and cavernous to hyper-precise and technical, reflecting the genre’s many regional scenes and substyles. From the mid‑1980s Florida scene (Tampa) and parallel developments in the US, UK, and Sweden, death metal evolved into numerous branches including brutal death metal, technical death metal, melodic death metal, and death‑doom, each emphasizing different aspects of speed, complexity, melody, or heaviness.

Doom metal is a heavy metal subgenre defined by slow to mid-tempo grooves, down-tuned, highly distorted guitars, and an atmosphere of dread, melancholy, and weight. It emphasizes ominous, minor-key riffs and sustained tones over speed or virtuosity, creating a crushing sense of space and inevitability. Vocals range from plaintive and theatrical (epic/traditional doom) to anguished wails or harsh growls (death-doom), and lyrics often explore themes of suffering, mortality, the occult, apocalyptic visions, and existential despair. Song structures are typically riff-centric and long-form, with repetition and gradual dynamic shifts producing a hypnotic, ritualistic feel.

Heavy metal is a loud, guitar-driven style of rock defined by heavily distorted riffs, thunderous drums, and powerful vocals. Its musical language emphasizes minor modes, modal (Aeolian, Phrygian) riffing, and energy over groove, often featuring virtuosic guitar solos and dramatic dynamic contrasts. Emerging from late-1960s blues rock and psychedelic experimentation, heavy metal codified a darker, heavier sound with bands like Black Sabbath, Deep Purple, and Led Zeppelin. The genre values weight, intensity, and grandeur—whether through plodding, doom-laden tempos or galloping, high-energy rhythms—paired with themes that range from personal struggle and social critique to fantasy, mythology, and the occult.

Metal (often used to mean heavy metal in its broad, umbrella sense) is a loud, guitar-driven style of rock defined by high-gain distortion, emphatic and often martial rhythms, and a dense, powerful low end. It foregrounds riff-based songwriting, dramatic dynamics, virtuosic guitar solos, and commanding vocals that range from melodic wails to aggressive snarls and growls. Harmonically, metal favors minor modes, modal color (Aeolian, Phrygian), chromaticism, and tritone-inflected tension, while thematically it explores power, mythology, the occult, social critique, fantasy, and existential subjects. While adjacent to hard rock, metal typically pushes amplification, distortion, precision, and thematic intensity further, forming a foundation for many specialized subgenres.

Old school death metal (OSDM) is the formative, raw strain of death metal that took shape in the mid-to-late 1980s. It emphasizes downtuned, palm-muted riffing, tremolo-picked lines, and thunderous drums that shift between blast beats, skank beats, and mid-tempo stomps. Vocals are guttural and cavernous, projecting themes of mortality, horror, occultism, and decay. Production is intentionally unvarnished: guitars are thick and abrasive, drums are natural and roomy, and mixes privilege heaviness and atmosphere over precision. US bands typically favored tight, chug-heavy riff chains and chromatic menace, while the Swedish branch popularized the infamous “buzzsaw” guitar tone driven by the Boss HM-2 pedal. Song structures often unfold as riff-suites rather than strict verse–chorus forms, creating an inexorable, subterranean momentum.

Rock is a broad family of popular music centered on amplified instruments, a strong backbeat, and song forms that foreground riffs, choruses, and anthemic hooks. Emerging from mid‑20th‑century American styles like rhythm & blues, country, and gospel-inflected rock and roll, rock quickly expanded in scope—absorbing folk, blues, and psychedelic ideas—while shaping global youth culture. Core sonic markers include electric guitar (often overdriven), electric bass, drum kit emphasizing beats 2 and 4, and emotive lead vocals. Rock songs commonly use verse–chorus structures, blues-derived harmony, and memorable melodic motifs, ranging from intimate ballads to high‑energy, stadium‑sized performances.

Technical thrash metal is a highly intricate, precision-focused branch of thrash metal that emphasizes complex songwriting, demanding musicianship, and advanced rhythmic and harmonic ideas. It retains the speed and aggression of classic thrash, but layers in odd time signatures, frequent tempo shifts, syncopated riffing, contrapuntal guitar parts, and harmonically adventurous chord progressions. Bass and drums are foregrounded with independent, virtuosic lines, and guitar work often features rapid alternate picking, string-skipping, sweeping, and chromatic runs. Lyrically, the style favors cerebral or conceptual themes—technology, dystopia, science fiction, social critique—delivered with clear, assertive vocals ranging from gritty shouts to cleaner, piercing tones.

Thrash metal is a fast, aggressive, and riff‑driven style of metal characterized by high-tempo, palm‑muted downpicking; tightly synchronized rhythm sections; and abrasive, shouted or barked vocals. Songs typically sit in the 180–220+ BPM range, with rapid alternate picking, chugging power‑chord riffs, and precise double‑bass drumming. Harmonically, thrash favors minor tonalities, chromatic movement, tritone tension, and modal flavors such as Phrygian and Aeolian. Structures are riff-centric and often feature brisk tempo changes, sharp stops/starts, and technically demanding solos that draw on pentatonic, natural/harmonic minor, and modal runs. Lyrically, thrash is frequently anti‑authoritarian and socio‑political, addressing war, corruption, media manipulation, and personal alienation. Compared to speed metal, thrash is more percussive, staccato, and palm‑mute heavy; compared to death metal, vocals are generally less guttural and the riffing slightly less dissonant, but the intensity and precision remain core to the style.

Alternative is an umbrella term for non-mainstream popular music that grew out of independent and college-radio scenes. It emphasizes artistic autonomy, eclectic influences, and a willingness to subvert commercial formulas. Sonically, alternative often blends the raw immediacy of punk with the mood and texture of post-punk and new wave, adding elements from folk, noise, garage, and experimental rock. While guitars, bass, and drums are typical, production ranges from lo-fi to stadium-ready, and lyrics tend toward introspection, social critique, or surreal storytelling. Over time, “alternative” became both a cultural stance and a market category, spawning numerous substyles (alternative rock, alternative hip hop, alternative pop, etc.) and moving from underground circuits to mainstream prominence in the 1990s.

Deathrash is a hybrid metal style that fuses the speed, palm‑muted riffing, and structural clarity of thrash metal with the harsher timbres, lower tunings, and vocal extremity of death metal. Guitars typically combine galloping, down‑picked thrash rhythms with death‑metal tremolo lines, while drums move from skank beats and double‑kick patterns into rapid fills and occasional blasts. Vocals range from savage thrash snarls to mid‑to‑low death growls. Themes often dwell on death, occultism, warfare, and apocalyptic imagery, delivered with a raw, high‑energy attack. The overall sound is tight, fast, and aggressive, emphasizing precise right‑hand picking, minor/chromatic harmony, and a gritty, unpolished production aesthetic that retains clarity at high tempos.

Horror (as a musical style) is music deliberately crafted to elicit fear, dread, and anxiety. It emphasizes tension, surprise, and the uncanny through dissonant harmony, destabilized rhythm, and disturbing timbres. Whether in film, television, games, theater, or concert works, horror music often uses clusters, tritones, micro-intervals, extended instrumental techniques, and sudden loud/quiet contrasts. Sound design is integral: tape manipulations, low-frequency rumbles, unsettling field recordings, and analog or modular synth textures blur the line between score and sonic environment. Above all, the aim is psychological—guiding the audience’s anticipation and startle responses to produce a sustained sense of terror.

Progressive death metal is a branch of death metal that fuses the genre’s extreme vocals, blast‑beat drumming, and downtuned riffing with progressive rock/metal traits such as long, multi‑section song forms, odd meters, dynamic contrasts, and frequent clean/acoustic passages. Compared with straight death metal, it places heavier emphasis on harmonic exploration (modal mixture, chromatic and dissonant voicings), rhythmic complexity (polymeter, tempo modulation), and conceptual or narrative albums. Many landmark bands also integrate jazz fusion vocabulary and instrumental virtuosity, creating music that is both aggressive and intricately arranged. Early and canonical exponents include acts that mixed death metal’s intensity with progressive rock’s ambition and jazz‑derived techniques.