{ "model": { "rank": 10391, "code": "thing-q210411", "model_id": "vr.tr.tonic", "name": "tonic", "purpose": "Let an agent explain the tonic in music theory, help identify the tonic of a piece and use it in analysis and composition, and separate linguistic and drink senses.", "family": "Thing Registry", "category": "Cross-cutting context", "status": "research-draft", "kind": "thing", "plane": "XCT", "domain": "XCT.QTY", "industry": "", "version": "", "url": "/models/thing/q210411/", "tier": 2, "score": 45, "payload": { "layer": "wikidata", "aliases": [ "durak" ], "aliasCount": 1, "merged": 1, "knownIn": 45, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": "vr.tr.tonic-artifact", "source": { "dataset": "wikidata", "item": "Q210411", "url": "https://www.wikidata.org/wiki/Q210411", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-11T19:25:36Z", "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-Q210411", "registryId": "vr.tr.tonic", "name": "tonic", "version": "0.2.0-wave.2", "entryKind": "thing", "family": "Thing Registry", "domain": [ "XCT.QTY" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q210411/", "model": { "registry_id": "vr.tr.tonic", "name": "tonic", "purpose": "Let an agent explain the tonic in music theory, help identify the tonic of a piece and use it in analysis and composition, and separate linguistic and drink senses.", "definition": "In music, the first scale degree of a diatonic scale and the tonal centre to which melodies and harmonies gravitate, giving a key its name, with the tonic chord as the point of rest; the term also names a tonic accent in linguistics and, as a separate sense, a medicinal or refreshing drink.", "what_it_is_for": "Music theory, analysis and composition.", "affordances": [ "identify the tonic of a passage", "explain tonic function and cadences", "relate tonic to key and mode", "separate other senses" ], "distinguishing_features": [ "Scale degree one", "Tonal centre", "Names the key", "Point of resolution" ], "appearance": "Not physical; a scale degree in notation and sound.", "visual_identification": [ "First degree of the scale", "Point of rest in cadences", "The dominant is the fifth degree" ], "physical_properties": [], "families_and_kinds": [ "tonic in major and minor keys", "tonic in modal music", "tonic chord and function", "tonic in non-Western systems such as sa or the finalis" ], "related_models": [ { "relation": "is a kind of", "target": "degree", "why": "category" }, { "relation": "is part of", "target": "scale", "why": "structure" }, { "relation": "is related to", "target": "rhythm", "why": "other musical element" }, { "relation": "is confused with", "target": "tonic water", "why": "drink sense" } ], "identifiers": [], "standards_and_regulation": [ "No regulation; music theory conventions" ], "failure_modes_and_hazards": [ "Misidentifying the tonic in modal or ambiguous music", "Confusing senses" ], "in_scope": [], "out_of_scope": [], "characteristics": [] }, "sources": [], "structure": { "bundles": [ { "id": "identify", "name": "Identify", "description": "Finding the tonic.", "rationale": "Listen for rest.", "layers": [ { "id": "key", "name": "Key", "description": "Key and tonic.", "findings": [ { "id": "key-finding", "name": "Key", "description": "Key.", "questions": [ { "text": "What is the tonic of this piece or passage, based on key signature, cadences and final?", "kind": "definition" }, { "text": "Does the tonic change through modulation?", "kind": "boundary" } ] } ] }, { "id": "modal", "name": "Modal", "description": "Modes and ambiguity.", "findings": [ { "id": "modal-finding", "name": "Modal", "description": "Modal music.", "questions": [ { "text": "In modal or non-tonal music, what serves as the tonal centre, if any?", "kind": "boundary" }, { "text": "How is the finalis related?", "kind": "definition" } ] } ] } ] }, { "id": "function", "name": "Function", "description": "Tonic function.", "rationale": "Rest and departure.", "layers": [ { "id": "harmony", "name": "Harmony", "description": "Tonic chord.", "findings": [ { "id": "harmony-finding", "name": "Harmony", "description": "Harmony.", "questions": [ { "text": "How does the tonic chord function in cadences and progressions?", "kind": "definition" }, { "text": "Which chords substitute for it?", "kind": "definition" } ] } ] }, { "id": "melody", "name": "Melody", "description": "Melodic role.", "findings": [ { "id": "melody-finding", "name": "Melody", "description": "Melody.", "questions": [ { "text": "How do melodies establish and return to the tonic?", "kind": "definition" }, { "text": "How is tonic emphasised in this style?", "kind": "provenance" } ] } ] } ] }, { "id": "use", "name": "Use", "description": "Composition and performance.", "rationale": "Practical use.", "layers": [ { "id": "compose", "name": "Compose", "description": "Writing with the tonic.", "findings": [ { "id": "compose-finding", "name": "Compose", "description": "Composition.", "questions": [ { "text": "How can the tonic be delayed or emphasised for effect?", "kind": "action" }, { "text": "How do pedal points use it?", "kind": "definition" } ] } ] }, { "id": "ear", "name": "Ear", "description": "Ear training.", "findings": [ { "id": "ear-finding", "name": "Ear", "description": "Ear training.", "questions": [ { "text": "How can hearing the tonic be practised?", "kind": "action" }, { "text": "Which exercises help with solfege?", "kind": "action" } ] } ] } ] }, { "id": "senses", "name": "Senses", "description": "Disambiguation.", "rationale": "Tonic has other senses.", "layers": [ { "id": "other", "name": "Other", "description": "Other meanings.", "findings": [ { "id": "other-finding", "name": "Other", "description": "Other meanings.", "questions": [ { "text": "Is tonic water, a health tonic or a tonic accent meant?", "kind": "boundary" }, { "text": "Which entry fits?", "kind": "action" } ] } ] }, { "id": "systems", "name": "Systems", "description": "Other music systems.", "findings": [ { "id": "systems-finding", "name": "Systems", "description": "Other systems.", "questions": [ { "text": "What corresponds to the tonic in Indian, Arabic or other music systems?", "kind": "provenance" }, { "text": "How is it named?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Should tonic function be a separate entry?", "How should theory resources be linked?", "How should non-Western equivalents be linked?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "unit, quantity or measure", "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 tonic, record what state it is in, and decide what may be done with it.", "whatItIs": "Let an agent explain the tonic in music theory, help identify the tonic of a piece and use it in analysis and composition, and separate linguistic and drink senses.", "characteristics": { "substance": "abstract", "origin": "conceptual", "agency": "inert" }, "whatYouCanDoWithIt": [ "observed and measured" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: durak.", "1 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 45 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 tonic, and on what evidence are they told apart?" ], "whatItIsMadeOf": "an abstraction with no physical instance", "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": [ "observe it, measure it, record its state" ], "howItIsRecognised": [ "Nothing to see: a unit is a convention. What is seen is an instrument reading in 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": [ "durak" ] } ], "standing": "Described in 45 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 1 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 tonic from another, and a tonic 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 tonic, 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 tonic, 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 tonic 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 tonic, 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 tonic, 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 tonic 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 tonic 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 tonic, 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 tonic, 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 tonic 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 tonic from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a tonic, 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 tonic, 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 tonic 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 tonic 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 tonic between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a tonic, 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 tonic, 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 tonic 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 tonic, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a tonic 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 tonic, 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 tonic, 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 tonic is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "definition-and-realisation", "name": "Definition, dimension and realisation", "description": "What tonic is defined as and how it is realised in practice.", "rationale": "A unit is not the quantity it measures, and its definition has a history that older data still depends on.", "layers": [ { "id": "definition", "name": "Definition and dimension", "description": "The defining relation and the quantity it measures.", "findings": [ { "id": "definition-record", "name": "Definition, body and date", "description": "What defines it now, and what defined it before.", "questions": [ { "id": "definition-record-q01", "text": "How is tonic defined, by which body, and since when?", "kind": "definition" }, { "id": "definition-record-q02", "text": "What was the previous definition, and what data still depends on it?", "kind": "provenance" } ] } ] }, { "id": "conversion", "name": "Conversion and compatibility", "description": "Relations to other units, exact or approximate.", "findings": [ { "id": "conversion-record", "name": "Conversions and their exactness", "description": "Factors, and whether each is exact by definition.", "questions": [ { "id": "conversion-record-q01", "text": "What conversions relate tonic to other units, and which are exact by definition?", "kind": "measurement" }, { "id": "conversion-record-q02", "text": "Where does rounding a conversion change a decision, and how should that be recorded?", "kind": "action" } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a tonic 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 tonic and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a tonic, 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 tonic, 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 tonic 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 tonic is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a tonic, 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 tonic, 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 tonic is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 4, "layers": 8, "findings": 10, "questions": 28 } } } }