{ "model": { "rank": 1590, "code": "thing-q9759", "model_id": "vr.tr.blues", "name": "blues", "purpose": "Let an agent explain the blues as a genre and form, describe its styles and history with attribution, support listening and playing, and identify notable artists and recordings.", "family": "Thing Registry", "category": "Information and virtual systems", "status": "research-draft", "kind": "thing", "plane": "INF", "domain": "INF.MED", "industry": "", "version": "", "url": "/models/thing/q9759/", "tier": 2, "score": 136, "payload": { "layer": "wikidata", "aliases": [ "African blues", "blues standard", "acoustic Chicago blues", "harmonica blues", "acoustic Memphis blues", "Chicago blues", "jug band", "traditional blues", "pre-war blues", "contemporary blues", "Delta blues", "songsters music", "Texas blues", "regional blues", "classic female blues", "jump blues", "Italian blues", "urban blues", "West Coast blues", "St. Louis blues", "New York blues", "twelve-bar blues", "boogie-woogie", "Kansas City blues", "soul blues", "piano blues", "East Coast blues", "acid blues", "French blues", "Argentinian blues", "gospel blues", "Canadian blues", "Louisiana blues", "dirty blues", "fife and drum blues", "Venezuelan blues", "holler blues", "Indian blues", "juke joint blues", "electric blues" ], "aliasCount": 65, "merged": 65, "knownIn": 136, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": null, "source": { "dataset": "wikidata", "item": "Q9759", "url": "https://www.wikidata.org/wiki/Q9759", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-11T23:44:46Z", "providers": [ "Claude" ], "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify", "pass": 2, "wave": 2, "engine": "claude" }, "metaModel": { "id": "THING-Q9759", "registryId": "vr.tr.blues", "name": "blues", "version": "0.2.0-wave.2", "entryKind": "thing", "family": "Thing Registry", "domain": [ "INF.MED" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q9759/", "model": { "registry_id": "vr.tr.blues", "name": "blues", "purpose": "Let an agent explain the blues as a genre and form, describe its styles and history with attribution, support listening and playing, and identify notable artists and recordings.", "definition": "A music genre and form that originated among African Americans in the Deep South in the late nineteenth century, built on the twelve-bar blues progression, blue notes and call and response, with regional and stylistic variants such as Delta, Piedmont, Chicago, Memphis, harmonica and acoustic blues, blues standards, and later fusions and African blues; blues shaped jazz, rhythm and blues and rock and is documented by historians and archives.", "what_it_is_for": "A foundational African American music genre.", "affordances": [ "explain the form and styles", "describe history with attribution", "support listening and playing", "identify artists and recordings" ], "distinguishing_features": [ "Blues form and scale", "Call and response", "Regional styles", "Wide influence" ], "appearance": "Not physical; music heard in recordings and performance.", "visual_identification": [ "Twelve-bar form and blue notes", "African American origin", "Jazz and rhythm and blues are related but distinct genres" ], "physical_properties": [], "families_and_kinds": [ "Delta and country blues", "Piedmont and Memphis blues", "Chicago and electric blues", "harmonica and acoustic blues", "blues standards and blues-influenced genres" ], "related_models": [ { "relation": "is a kind of", "target": "popular music", "why": "category" }, { "relation": "is a kind of", "target": "music of North America", "why": "category" }, { "relation": "is related to", "target": "jazz", "why": "related genre" }, { "relation": "is related to", "target": "guitar", "why": "characteristic instrument" } ], "identifiers": [], "standards_and_regulation": [ "Copyright on recordings and compositions", "Archival standards for recordings" ], "failure_modes_and_hazards": [ "Erasing African American origins", "Reproducing lyrics beyond fair use", "Oversimplifying regional styles" ], "in_scope": [], "out_of_scope": [], "characteristics": [] }, "sources": [], "structure": { "bundles": [ { "id": "understand", "name": "Understand", "description": "The blues form.", "rationale": "Music.", "layers": [ { "id": "form", "name": "Form", "description": "Form and elements.", "findings": [ { "id": "form-finding", "name": "Form", "description": "Form.", "questions": [ { "text": "What are the twelve-bar progression, blue notes, blues scale and call and response?", "kind": "definition" }, { "text": "How do lyrics typically work in the blues?", "kind": "definition" } ] } ] }, { "id": "styles", "name": "Styles", "description": "Styles.", "findings": [ { "id": "styles-finding", "name": "Styles", "description": "Styles.", "questions": [ { "text": "How do Delta, Piedmont, Chicago, Memphis, harmonica and other blues styles differ?", "kind": "provenance" }, { "text": "Which entry fits a specific style?", "kind": "action" } ] } ] } ] }, { "id": "history", "name": "History", "description": "History of the blues.", "rationale": "Attribution.", "layers": [ { "id": "origins", "name": "Origins", "description": "Origins.", "findings": [ { "id": "origins-finding", "name": "Origins", "description": "Origins.", "questions": [ { "text": "How did the blues emerge from African American musical traditions in the Deep South, according to historians?", "kind": "provenance" }, { "text": "Which sources and archives document early blues?", "kind": "provenance" } ] } ] }, { "id": "influence", "name": "Influence", "description": "Influence.", "findings": [ { "id": "influence-finding", "name": "Influence", "description": "Influence.", "questions": [ { "text": "How did the blues shape jazz, rhythm and blues, rock and other genres, and what is African blues?", "kind": "provenance" }, { "text": "How is credit to originating artists addressed?", "kind": "boundary" } ] } ] } ] }, { "id": "play", "name": "Play", "description": "Playing and listening.", "rationale": "Practice.", "layers": [ { "id": "play", "name": "Play", "description": "Playing the blues.", "findings": [ { "id": "play-finding", "name": "Play", "description": "Playing.", "questions": [ { "text": "How can someone learn to play blues on guitar, harmonica or piano, starting with the twelve-bar form?", "kind": "action" }, { "text": "Which blues standards are good starting points?", "kind": "provenance" } ] } ] }, { "id": "listen", "name": "Listen", "description": "Listening.", "findings": [ { "id": "listen-finding", "name": "Listen", "description": "Listening.", "questions": [ { "text": "Which artists and recordings represent each style, according to critics and historians?", "kind": "provenance" }, { "text": "How can lyrics be discussed without reproducing them at length?", "kind": "boundary" } ] } ] } ] }, { "id": "learn", "name": "Learn", "description": "Teaching and culture.", "rationale": "Education.", "layers": [ { "id": "teach", "name": "Teach", "description": "Teaching the blues.", "findings": [ { "id": "teach-finding", "name": "Teach", "description": "Teaching.", "questions": [ { "text": "How can the blues be taught musically and historically?", "kind": "action" }, { "text": "Which misconceptions arise?", "kind": "provenance" } ] } ] }, { "id": "culture", "name": "Culture", "description": "Blues culture today.", "findings": [ { "id": "culture-finding", "name": "Culture", "description": "Culture.", "questions": [ { "text": "How is the blues kept alive in festivals, museums and communities?", "kind": "provenance" }, { "text": "Which entry fits a specific festival?", "kind": "action" } ] } ] } ] } ] }, "openQuestions": [ "Should each style be a separate entry?", "How should discographies be linked?", "How should archives be linked?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "work, medium or creative form", "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.", "facetsInferred": true, "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.", "purpose": "Give an agent a durable, checkable way to recognise a blues, record what state it is in, and decide what may be done with it.", "whatItIs": "Let an agent explain the blues as a genre and form, describe its styles and history with attribution, support listening and playing, and identify notable artists and recordings.", "characteristics": { "substance": "information", "origin": "conceptual", "agency": "inert" }, "whatYouCanDoWithIt": [ "read and interpreted", "observed and measured" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: African blues, blues standard, acoustic Chicago blues, harmonica blues, acoustic Memphis blues, Chicago blues, jug band, traditional blues, pre-war blues, contemporary blues, Delta blues, songsters music.", "65 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 136 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is." ], "openQuestionsForResearch": [ "Which of the bundles below does a real task actually need, and which are ceremony?", "What does this thing have that the facets do not capture at all?", "Which neighbouring kind is most often confused with a blues, and on what evidence are they told apart?" ], "whatItIsMadeOf": "content that has to be carried by something else", "physicalCharacter": [ "Does nothing on its own; everything it does, something else did to it.", "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing." ], "whatCanBeDoneWithIt": [ "read it and act on what it says", "observe it, measure it, record its state" ], "howItIsRecognised": [ "What is seen is a copy or a performance, not the work. Recognising the work means recognising the content through whatever is carrying it." ], "relatedModels": [ { "relation": "covers", "note": "Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.", "targets": [ "African blues", "blues standard", "acoustic Chicago blues", "harmonica blues", "acoustic Memphis blues", "Chicago blues", "jug band", "traditional blues", "pre-war blues", "contemporary blues", "Delta blues", "songsters music" ] } ], "standing": "Described in 136 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 65 finer distinctions are held inside this entry as names rather than as separate models.", "structure": { "bundles": [ { "id": "identity-and-classification", "name": "Identity, naming and classification", "description": "How an agent tells one blues from another, and a blues from things that resemble it.", "rationale": "Recognition comes before every other claim. Without stable identity nothing else in the model can be trusted to be about the same thing twice.", "layers": [ { "id": "naming-and-identifiers", "name": "Names and identifiers", "description": "The names this thing goes by and the identifiers that survive translation and time.", "findings": [ { "id": "preferred-name-and-aliases", "name": "Preferred name, aliases and local names", "description": "Which name to use, which names mean the same thing, and which merely sound similar.", "questions": [ { "id": "preferred-name-and-aliases-q01", "text": "What identifies and describes the name of a blues, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "preferred-name-and-aliases-q02", "text": "Who or what asserted this about the name of a blues, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "preferred-name-and-aliases-q03", "text": "What may an agent decide or do once the name of a blues is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "stable-identifiers", "name": "Stable identifiers and external keys", "description": "Identifiers that keep pointing at this kind of thing across systems and languages.", "questions": [ { "id": "stable-identifiers-q01", "text": "What identifies and describes an identifier for a blues, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stable-identifiers-q02", "text": "Who or what asserted this about an identifier for a blues, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stable-identifiers-q03", "text": "What may an agent decide or do once an identifier for a blues is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "classification-and-granularity", "name": "Classification and granularity", "description": "Where a blues sits among kinds, and how finely a task needs to cut it.", "findings": [ { "id": "kind-and-parents", "name": "Kind, parents and neighbouring kinds", "description": "The classes this thing belongs to and the ones it is next to.", "questions": [ { "id": "kind-and-parents-q01", "text": "What identifies and describes the kind of a blues, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "kind-and-parents-q02", "text": "Who or what asserted this about the kind of a blues, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "kind-and-parents-q03", "text": "What may an agent decide or do once the kind of a blues is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "distinguishing-features", "name": "Distinguishing features", "description": "What separates a blues from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a blues, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "distinguishing-features-q02", "text": "Who or what asserted this about what distinguishes a blues, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "distinguishing-features-q03", "text": "What may an agent decide or do once what distinguishes a blues is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "state-and-lifecycle", "name": "State and lifecycle", "description": "The states a blues passes through and the events that move it between them.", "rationale": "Most decisions about a thing depend on what state it is in now, which is a claim with a time on it, not a property.", "layers": [ { "id": "lifecycle-stages", "name": "Lifecycle stages", "description": "From coming into existence to ceasing to be one of these.", "findings": [ { "id": "stages-and-transitions", "name": "Stages and transitions", "description": "The stages worth naming and what moves a blues between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a blues, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stages-and-transitions-q02", "text": "Who or what asserted this about the lifecycle of a blues, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stages-and-transitions-q03", "text": "What may an agent decide or do once the lifecycle of a blues is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "observations-and-status", "name": "Observations and current status", "description": "What is observed about a blues, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a blues is recorded so that it can be superseded rather than overwritten.", "questions": [ { "id": "observation-record-q01", "text": "What identifies and describes an observation of a blues, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "observation-record-q02", "text": "Who or what asserted this about an observation of a blues, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "observation-record-q03", "text": "What may an agent decide or do once an observation of a blues is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "content-and-access", "name": "Content, encoding and access", "description": "What a blues says, how it is encoded and who may read it.", "rationale": "An informational thing carries content that can be copied, versioned and withheld, none of which its physical carrier explains.", "layers": [ { "id": "content-and-encoding", "name": "Content and encoding", "description": "The content itself, its format and its language.", "findings": [ { "id": "content-and-format", "name": "Content, format and language", "description": "What a blues contains and in what form it is held.", "questions": [ { "id": "content-and-format-q01", "text": "What identifies and describes the content of a blues, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "content-and-format-q02", "text": "Who or what asserted this about the content of a blues, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "content-and-format-q03", "text": "What may an agent decide or do once the content of a blues is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "access-and-rights", "name": "Access, rights and retention", "description": "Who may read, copy or change it, and for how long it is kept.", "findings": [ { "id": "access-rules", "name": "Access rules and retention", "description": "The permissions attached to a blues and the period it survives.", "questions": [ { "id": "access-rules-q01", "text": "What identifies and describes access to a blues, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "access-rules-q02", "text": "Who or what asserted this about access to a blues, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "access-rules-q03", "text": "What may an agent decide or do once access to a blues is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "work-and-manifestation", "name": "Work, version and copy", "description": "Which level of blues a statement is about.", "rationale": "The work, the edition, the file and the copy in hand are four things; rights and content attach to different ones.", "layers": [ { "id": "levels", "name": "Levels of the thing", "description": "Work, expression, manifestation and item, in plain terms.", "findings": [ { "id": "level-rules", "name": "What belongs at each level", "description": "Which facts hold for the work and which only for one copy.", "questions": [ { "id": "level-rules-q01", "text": "For blues, which facts belong to the work itself, which to a version, and which to a single copy?", "kind": "boundary" }, { "id": "level-rules-q02", "text": "What identifier exists at each level, and which one is being cited?", "kind": "definition" } ] } ] }, { "id": "versions", "name": "Versions, editions and variants", "description": "How versions differ and which is canonical to whom.", "findings": [ { "id": "version-record", "name": "Versions and canonicity", "description": "Differences that matter and who calls one authoritative.", "questions": [ { "id": "version-record-q01", "text": "Which versions or editions of blues exist, and how do they differ substantively?", "kind": "definition" }, { "id": "version-record-q02", "text": "Who treats which version as authoritative, and for what purpose?", "kind": "provenance" } ] } ] } ] }, { "id": "authorship-and-rights", "name": "Authorship, rights and permitted use", "description": "Who made blues and what may be done with it.", "rationale": "Rights are jurisdictional, time-limited and attached to a level, and an agent that ignores that will copy what it may not.", "layers": [ { "id": "authorship", "name": "Authorship and contribution", "description": "Who contributed what, and in what capacity.", "findings": [ { "id": "contribution-record", "name": "Contributors and roles", "description": "The people and bodies behind it, with their roles.", "questions": [ { "id": "contribution-record-q01", "text": "Who authored or contributed to blues, in what roles, and how is that attested?", "kind": "provenance" }, { "id": "contribution-record-q02", "text": "Where authorship is disputed or anonymous, what is recorded instead?", "kind": "boundary" } ] } ] }, { "id": "rights", "name": "Rights and permissions", "description": "Which rights subsist, where, until when, and what they permit.", "findings": [ { "id": "rights-record", "name": "Rights, term and permitted acts", "description": "The regime in force and what it allows.", "questions": [ { "id": "rights-record-q01", "text": "What rights subsist in blues, in which jurisdictions, and until when?", "kind": "definition" }, { "id": "rights-record-q02", "text": "Which acts are permitted without further permission, and which must an agent refuse?", "kind": "action" } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a blues came from and when it held.", "rationale": "A claim without a source and a time cannot be superseded, only overwritten, and an agent that overwrites loses the ability to explain itself.", "layers": [ { "id": "source-and-authority", "name": "Source and authority", "description": "Who said it, on what evidence, and how strongly.", "findings": [ { "id": "claim-provenance", "name": "Claim provenance and confidence", "description": "The authority behind each claim about a blues and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a blues, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "claim-provenance-q02", "text": "Who or what asserted this about a claim about a blues, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "claim-provenance-q03", "text": "What may an agent decide or do once a claim about a blues is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "time-and-versions", "name": "Time, versions and supersession", "description": "When a claim was true, when it was learnt, and what replaced it.", "findings": [ { "id": "validity-and-supersession", "name": "Validity period and supersession", "description": "How an old claim about a blues is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a blues, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "validity-and-supersession-q02", "text": "Who or what asserted this about the validity of a claim about a blues, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "validity-and-supersession-q03", "text": "What may an agent decide or do once the validity of a claim about a blues is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 6, "layers": 12, "findings": 14, "questions": 38 } } } }