{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.heavy-metal-music","code":"thing-q38848","url":"https://ver.cy/models/thing/q38848/","name":"heavy metal music","alternateNames":["African heavy metal","Argentine heavy metal","Buddhist metal","stoner rock","French heavy metal","country metal","Christian metal","Canadian heavy metal","Bangladeshi heavy metal","new wave of British heavy metal","new wave of American heavy metal","US power metal"],"kind":"thing","status":"published","version":"0.2.0-wave.3","language":"en","classifiers":{"family":"Thing Registry","category":"Information and virtual systems","entryKind":"thing","plane":"INF","domain":["INF.MED"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A genre of rock music that developed in the late 1960s and early 1970s in the United Kingdom and the United States, characterised by distorted guitars, emphatic rhythms, dense bass and drum sound, powerful vocals and often loudness and virtuosity, pioneered by Black Sabbath, Deep Purple and Led Zeppelin and diversified into subgenres such as thrash, death, black, doom, power and stoner metal and regional scenes from Argentina and France to Africa, with crossovers such as country metal and religiously themed variants; heavy metal has a global fan culture and a history of controversy.","purpose":"Let an agent explain heavy metal music and its subgenres, relay history, sound and regional scenes from music history sources with attribution, describe culture and controversies neutrally, and distinguish heavy metal from hard rock and from the chemical sense of heavy metal.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Distortion and volume","Riff-based","Many subgenres","Global scenes"],"structure":{"bundles":[{"id":"understand","name":"Understand","description":"What heavy metal is.","layers":[{"id":"definition","name":"Definition","description":"Definition and sound.","findings":[{"id":"definition-finding","name":"Definition","description":"Definition.","questions":[{"text":"What defines heavy metal musically, and how does it differ from hard rock?","kind":"definition"},{"text":"Is the question about the genre, a subgenre, a band or heavy metals in chemistry?","kind":"boundary"}]}]},{"id":"subgenres","name":"Subgenres","description":"Subgenres.","findings":[{"id":"subgenres-finding","name":"Subgenres","description":"Subgenres.","questions":[{"text":"How do thrash, death, black, doom, power and stoner metal differ?","kind":"definition"},{"text":"Which entry fits the specific subgenre?","kind":"action"}]}]}]},{"id":"history","name":"History","description":"History.","layers":[{"id":"origins","name":"Origins","description":"Origins.","findings":[{"id":"origins-finding","name":"Origins","description":"Origins.","questions":[{"text":"How did heavy metal emerge from blues rock and psychedelia, and who were its pioneers, as music historians describe?","kind":"provenance"},{"text":"Which references are standard?","kind":"provenance"}]}]},{"id":"scenes","name":"Scenes","description":"Regional scenes.","findings":[{"id":"scenes-finding","name":"Scenes","description":"Scenes.","questions":[{"text":"How did scenes develop in Argentina, France, Africa, Scandinavia and elsewhere?","kind":"provenance"},{"text":"Which entry fits the specific scene?","kind":"action"}]}]}]},{"id":"culture","name":"Culture","description":"Culture.","layers":[{"id":"fans","name":"Fans","description":"Fan culture.","findings":[{"id":"fans-finding","name":"Fans","description":"Fans.","questions":[{"text":"What are the fan culture, festivals and imagery of heavy metal?","kind":"provenance"},{"text":"Which sources are cited?","kind":"provenance"}]}]},{"id":"controversy","name":"Controversy","description":"Controversies.","findings":[{"id":"controversy-finding","name":"Controversy","description":"Controversy.","questions":[{"text":"What controversies and moral panics have surrounded heavy metal, with positions attributed?","kind":"provenance"},{"text":"Is the presentation neutral?","kind":"boundary"}]}]}]},{"id":"context","name":"Context","description":"Crossovers and study.","layers":[{"id":"crossovers","name":"Crossovers","description":"Crossovers.","findings":[{"id":"crossovers-finding","name":"Crossovers","description":"Crossovers.","questions":[{"text":"What are country metal, Christian and Buddhist metal and other crossovers?","kind":"provenance"},{"text":"Which entry fits the specific crossover?","kind":"action"}]}]},{"id":"study","name":"Study","description":"Metal studies.","findings":[{"id":"study-finding","name":"Study","description":"Study.","questions":[{"text":"How is heavy metal studied academically?","kind":"provenance"},{"text":"Which entry fits musicology?","kind":"action"}]}]}]}]},"agentConduct":{"may":["Describe the history, subgenres and artists of heavy metal from cited sources.","Recommend music to a listener who asked for it."],"mustNot":["Link fans of the genre to violence, crime or Satanism without evidence.","Copy or distribute recordings in breach of copyright.","Play music at volumes that damage the hearing of listeners or workers."],"requiresHuman":["Removing or censoring songs or lyrics on a public platform."]},"ethics":{"considerations":["The genre has been the target of moral panics that stigmatized its fans.","Loud performance can cause lasting hearing loss for audiences and musicians."],"affectedParties":["Fans","Musicians and rights holders","Venue staff"]},"owners":{"steward":"Nobody owns the genre; rights holders own each recording and composition.","roles":[],"masterSystems":[]},"relations":[{"target":"Q12326776","type":"parent","note":"registry parent class"},{"target":"metal music","type":"related","note":"in registry terms"},{"target":"hard rock","type":"related","note":"and blues rock"},{"target":"Black Sabbath","type":"related","note":"among others"},{"target":"heavy metals","type":"related","note":"in chemistry"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.heavy-metal-music","Wikidata: Q38848 (https://www.wikidata.org/wiki/Q38848)"]},"properties":{"applicability":"not-applicable","items":["origin: late 1960s period - UK and US","first Black Sabbath album: 1970 year"]},"recognition":{"applicability":"optional","items":["Rock genre with distorted guitars and heavy sound","Thrash, death, black, doom, power, stoner metal; Argentine, French, African scenes; country and Buddhist metal","Hard rock is a close relative; heavy metals in chemistry are elements","Not a visible object; loud distorted guitar music and its imagery."]},"capabilities":{"applicability":"required","items":["explain sound and subgenres","relay history and scenes","describe culture neutrally","distinguish from hard rock and metals"]},"hazards":{"applicability":"required","items":["Confusing subgenres","Presenting moral panics as fact","Hearing damage at loud concerts"]},"interfaces":{"applicability":"required","items":["No regulation of the genre","Historical censorship and parental advisory labelling","Noise and hearing protection rules at concerts"]},"context":{"applicability":"required","items":["Not applicable; a music genre.","traditional heavy metal and NWOBHM","thrash, death and black metal","doom and stoner metal","power, progressive and symphonic metal","regional scenes such as Argentine, French and African heavy metal","crossovers such as country metal and religiously themed metal including Christian and Buddhist metal"]}},"sources":[{"title":"Wikidata item Q38848: heavy metal music","url":"https://www.wikidata.org/wiki/Q38848","note":"identity and sense of the item"},{"title":"Wikipedia: Heavy metal music","url":"https://en.wikipedia.org/wiki/Heavy_metal_music","note":"general description of the item"}],"openQuestions":["Should major subgenres be separate primary entries?","How should music history sources be linked?","The registry entry has merged aliases naming regional scenes and crossovers; should they be split off?"],"resources":{"spec":"/models/things/publications/thing-q38848/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q38848/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-13T04:49:08Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"not-applicable","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-06T19:51:59+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass","interaction.properties":"Plane INF: no invented physical properties."},"score":1.0}}