{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.harp","code":"thing-q47369","url":"https://ver.cy/models/thing/q47369/","name":"harp","alternateNames":["Bohemian harp","chromatic harp","ayumaa","folk harp","epigonion","multi-course harp","frame harp","open harp","khutang","kugo","arpa doppia"],"kind":"thing","status":"published","version":"0.1.0-research.1","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.OBJ"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A composite chordophone in which the plane of the strings is perpendicular to the soundboard, the strings running from a neck (with or without a forepillar) to a resonator and normally sounded by plucking.","purpose":"Enable an AI agent to recognise a harp, assess its musical and physical readiness, and decide which playing, tuning, maintenance and handling actions are appropriate.","scope":{"in":["Harp identity, construction type and intended playing configuration","String courses, tuning assignments and supported musical range","Soundboard, resonating body and structures carrying string tension","Levers, pedals or other fitted pitch-changing mechanisms","Acoustic response, pickups and instrument-mounted electronics","Readiness for playing, restringing, adjustment and transport"],"out":["Scores, compositions and musical interpretations","A player's technique, health and learning history","Room acoustics and venue sound systems","Manufacturing businesses, ownership contracts and market valuation","Separate cases, benches, tuning tools and external amplifiers as objects"],"boundaries":[]},"distinguishingFeatures":["Has strings running between a string-bearing neck or equivalent upper member and a resonating body, with the string plane approximately perpendicular to the soundboard; a zither's strings run approximately parallel to its soundboard.","Normally assigns different pitches to separate open strings rather than obtaining its ordinary scale by stopping strings against a fingerboard as on a guitar.","Distinguish a lyre by tracing the string supports: its strings run from the body toward a crossbar carried by arms, rather than the characteristic harp neck-to-body arrangement.","Do not require a forepillar, pedals or levers for recognition; establish the harp's construction type from its actual string and body geometry.","Exclude objects called a jaw harp or mouth harp when sound is generated by a vibrating tongue rather than an array of tensioned strings."],"structure":{"bundles":[{"id":"harp-identity-and-geometry","name":"Harp identity and geometry","description":"Establishes what kind of harp is present and how its strings relate to its body and supports.","layers":[{"id":"instrument-recognition","name":"Instrument recognition","description":"Tests the physical basis for identifying the object as a harp.","findings":[{"id":"string-to-body-geometry","name":"String-to-body geometry","description":"Record the string plane, attachment points and relationship to the soundboard as evidence for identification.","questions":[{"text":"How do the strings run between the neck or upper support and the resonating body?","id":"string-to-body-geometry-q01","kind":"definition"},{"text":"What observed geometry distinguishes this instrument from a lyre, zither or fingerboard instrument?","id":"string-to-body-geometry-q02","kind":"boundary"}]}]},{"id":"construction-and-tradition","name":"Construction and tradition","description":"Places the individual instrument within an evidenced construction and use context.","findings":[{"id":"documented-harp-configuration","name":"Documented harp configuration","description":"Record maker or tradition attribution, string-row arrangement and structural members without inferring missing features from a familiar harp type.","questions":[{"text":"Which markings, maker records or other evidence identify this harp's type and intended configuration?","id":"documented-harp-configuration-q01","kind":"provenance"},{"text":"How many string rows are present, how are they arranged, and is a forepillar fitted?","id":"documented-harp-configuration-q02","kind":"definition"}]}]}]},{"id":"strings-and-tuning","name":"Strings and tuning","description":"Defines the harp's string inventory, pitch map and tuning condition.","layers":[{"id":"string-position-map","name":"String position map","description":"Identifies each intended string position and its required string.","findings":[{"id":"string-specifications-and-gaps","name":"String specifications and gaps","description":"Record installed strings, absent or damaged strings, identification markings and supported replacement specifications.","questions":[{"text":"Which string positions exist, and which contain missing, broken or visibly deteriorated strings?","id":"string-specifications-and-gaps-q01","kind":"measurement"},{"text":"What evidence establishes the material, gauge and construction required at each position?","id":"string-specifications-and-gaps-q02","kind":"provenance"}]}]},{"id":"pitch-map-and-stability","name":"Pitch map and stability","description":"Relates measured string pitches to the intended tuning and its persistence.","findings":[{"id":"tuning-targets-and-drift","name":"Tuning targets and drift","description":"Record intended pitches, tuning reference, control settings and changes in measured pitch over a stated interval.","questions":[{"text":"What target pitch belongs to each string, under which tuning system and pitch-control settings?","id":"tuning-targets-and-drift-q01","kind":"definition"},{"text":"How far does each assessed string deviate from its target, and how does that deviation change after tuning?","id":"tuning-targets-and-drift-q02","kind":"measurement"}]}]}]},{"id":"pitch-changing-controls","name":"Pitch-changing controls","description":"Captures fitted mechanisms for changing string pitch and the limits of their operation.","layers":[{"id":"control-to-string-mapping","name":"Control-to-string mapping","description":"Establishes which strings each lever, pedal or other control affects.","findings":[{"id":"available-control-states","name":"Available control states","description":"Record each control's positions, affected strings and intended pitch effects, including an explicit absence of mechanisms when applicable.","questions":[{"text":"Which pitch-changing controls are fitted, and which strings does each control affect?","id":"available-control-states-q01","kind":"definition"},{"text":"What pitches are intended at each supported control position?","id":"available-control-states-q02","kind":"definition"}]}]},{"id":"mechanism-function-and-adjustment","name":"Mechanism function and adjustment","description":"Assesses whether fitted controls produce their intended effects reliably.","findings":[{"id":"engagement-and-pitch-accuracy","name":"Engagement and pitch accuracy","description":"Record pitch accuracy, movement faults and unwanted sounds associated with control operation.","questions":[{"text":"At each tested setting, what pitch error, incomplete engagement, sticking or unwanted noise occurs?","id":"engagement-and-pitch-accuracy-q01","kind":"measurement"},{"text":"Which observed faults permit documented user adjustment, and which require a harp technician?","id":"engagement-and-pitch-accuracy-q02","kind":"action"}]}]}]},{"id":"tension-bearing-body-and-sound","name":"Tension-bearing body and sound","description":"Assesses the structures supporting string tension and the harp's acoustic or electrical response.","layers":[{"id":"structural-condition","name":"Structural condition","description":"Examines the neck, string anchors, soundboard, body and other fitted load-bearing members.","findings":[{"id":"deformation-joints-and-anchors","name":"Deformation, joints and anchors","description":"Record cracks, joint movement, anchor condition and changes in shape, distinguishing observations from a qualified assessment.","questions":[{"text":"What cracking, separation, distortion or anchor movement is visible, and what earlier observations allow comparison?","id":"deformation-joints-and-anchors-q01","kind":"measurement"},{"text":"What documented limits or qualified assessment determine whether tuning or playing may continue?","id":"deformation-joints-and-anchors-q02","kind":"action"}]}]},{"id":"sound-production","name":"Sound production","description":"Assesses response across the strings and through any fitted electrical output.","findings":[{"id":"response-and-unwanted-sound","name":"Response and unwanted sound","description":"Record weak or uneven response, buzzing, rattling and electrical faults under reproducible playing and control conditions.","questions":[{"text":"Which strings, playing intensities or control settings produce weak response, buzzing or rattling?","id":"response-and-unwanted-sound-q01","kind":"measurement"},{"text":"If pickups or electronics are fitted, does the fault occur acoustically, electrically or through both outputs?","id":"response-and-unwanted-sound-q02","kind":"boundary"}]}]}]},{"id":"playing-care-and-movement","name":"Playing, care and movement","description":"Connects the harp's construction and present condition to practical use, care and transport decisions.","layers":[{"id":"playing-configuration","name":"Playing configuration","description":"Records how the harp is supported and accessed during intended use.","findings":[{"id":"support-and-control-clearance","name":"Support and control clearance","description":"Record intended orientation, support contacts, stability and access to strings and fitted controls.","questions":[{"text":"In its intended playing orientation, what supports the harp and what space is needed to reach its strings and controls?","id":"support-and-control-clearance-q01","kind":"measurement"},{"text":"Which positioning or support changes are needed before this harp can be played in the proposed setting?","id":"support-and-control-clearance-q02","kind":"action"}]}]},{"id":"care-and-transport-limits","name":"Care and transport limits","description":"Establishes instrument-specific procedures for routine care and movement.","findings":[{"id":"supported-maintenance-and-handling","name":"Supported maintenance and handling","description":"Record evidenced string-changing, environmental and handling requirements, including unresolved limits.","questions":[{"text":"What maker guidance or qualified advice establishes suitable string-changing procedures, environmental limits and lifting or packing methods?","id":"supported-maintenance-and-handling-q01","kind":"provenance"},{"text":"Given the harp's mass, geometry and condition, what preparation and assistance are required for the proposed maintenance or move?","id":"supported-maintenance-and-handling-q02","kind":"action"}]}]}]},{"id":"evidence-and-external-alignment","name":"Evidence and external alignment","description":"What the world already says about this thing, gathered so the model can be checked against it.","layers":[{"id":"reported-evidence","name":"Reported evidence","description":"Findings from the breadth pass, kept separate from the structural claims.","findings":[{"id":"evidence-kinds","name":"Kinds and varieties","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these kinds and varieties hold for the sense of harp this model covers, and on what evidence?","id":"evidence-kinds-q01","kind":"provenance"}]},{"id":"evidence-identifiers","name":"Identifiers and schemes","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these identifiers and schemes hold for the sense of harp this model covers, and on what evidence?","id":"evidence-identifiers-q01","kind":"provenance"}]},{"id":"evidence-standards-and-regulation","name":"Standards and regulation","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these standards and regulation hold for the sense of harp this model covers, and on what evidence?","id":"evidence-standards-and-regulation-q01","kind":"provenance"}]},{"id":"evidence-real-world-use","name":"Real-world use","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these real-world use hold for the sense of harp this model covers, and on what evidence?","id":"evidence-real-world-use-q01","kind":"provenance"}]},{"id":"evidence-measurements","name":"Typical measurements","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these typical measurements hold for the sense of harp this model covers, and on what evidence?","id":"evidence-measurements-q01","kind":"provenance"}]},{"id":"evidence-failure-modes-and-hazards","name":"Failure modes and hazards","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these failure modes and hazards hold for the sense of harp this model covers, and on what evidence?","id":"evidence-failure-modes-and-hazards-q01","kind":"provenance"}]},{"id":"evidence-regional-variation","name":"Regional variation","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these regional variation hold for the sense of harp this model covers, and on what evidence?","id":"evidence-regional-variation-q01","kind":"provenance"}]},{"id":"evidence-neighbours","name":"Neighbouring kinds and how to tell them apart","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these neighbouring kinds and how to tell them apart hold for the sense of harp this model covers, and on what evidence?","id":"evidence-neighbours-q01","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Describe harp types, history and playing, citing music sources.","Help an owner arrange tuning, maintenance or transport."],"mustNot":["Sell a harp under false claims about its maker, age or materials.","Advise tightening strings beyond their rated tension.","Move a large harp alone in a way that risks dropping it on people.","Trade instruments containing protected woods or ivory in breach of wildlife trade law."],"requiresHuman":["Restoring or altering a historic instrument."]},"ethics":{"considerations":["The harp is a national and cultural symbol in some countries and holds heritage value.","Historic instruments are irreplaceable."],"affectedParties":["Musicians","Owners and collectors","Instrument makers"]},"owners":{"steward":"The person or institution that owns it.","roles":[],"masterSystems":[]},"relations":[{"target":"Q19588495","type":"parent","note":"registry parent class"},{"target":"Q230262","type":"parent","note":"registry parent class"},{"target":"Q34379","type":"parent","note":"registry parent class"},{"target":"Q8205328","type":"parent","note":"registry parent class"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.harp","Wikidata: Q47369 (https://www.wikidata.org/wiki/Q47369)"]},"properties":{"applicability":"required","items":["Construction type: Observed construction and documented tradition; unknown permitted","String arrangement: Single row, multiple rows, crossed rows or other observed arrangement","Installed and intended string count: Number of strings, with missing positions identified separately","String specification by position: String position linked to material, diameter or gauge, construction and approved replacement specification","Pitch assignment and tuning reference: String position linked to intended pitch or frequency in Hz, tuning system and mechanism setting","Pitch-control configuration: None, individual levers, pedal mechanism, other documented mechanism or unknown","Tuning deviation: Cents from each assigned target, recorded with mechanism setting and measurement time","Load-bearing structure condition: Observed condition of neck, body, soundboard, joints and forepillar if present; assessed, uncertain or action-restricted","Pitch-mechanism response: Per control: movement, engagement, achieved pitch change, noise and unresolved fault","Playing and transport envelope: Mass in kg and dimensions in mm, including required playing and mechanism clearance","Sound-output configuration: Acoustic output, fitted pickups, active electronics and documented connections"]},"recognition":{"applicability":"required","items":["A triangular frame with strings running from the neck down to a sloping soundboard.","Concert harps stand tall with a column and pedals at the base."]},"capabilities":{"applicability":"required","items":["Identify playable strings and available pitches for a stated tuning and control configuration.","Tune strings to documented targets using compatible tools and an appropriate procedure.","Operate fitted pitch controls within their documented range and assess the resulting pitch changes.","Pluck and, where appropriate, amplify the harp to assess response, sustain and unwanted noise.","Replace identified strings or request specialist adjustment when the required specification and procedure are established.","Position, support, pack and move the harp according to its construction and documented handling requirements."]},"hazards":{"applicability":"required","items":["Strings under high tension can snap and cause injury.","Large harps are heavy and can topple."]},"interfaces":{"applicability":"required","items":["The revised Hornbostel-Sachs classification published by the Musical Instrument Museums Online consortium classifies harps within composite chordophones according to their construction."]},"context":{"applicability":"required","items":["Harps are played in solo performances, ensembles, orchestras and traditional musical settings.","They are used in music education and composition, with tuning and available pitch changes depending on the instrument's construction."]}},"sources":[{"title":"Systematik der Musikinstrumente: Ein Versuch - Erich M. von Hornbostel and Curt Sachs, Zeitschrift für Ethnologie (Berliner Gesellschaft für Anthropologie, Ethnologie und Urgeschichte)","url":"","note":"Organological definition of harps as composite chordophones whose strings stand perpendicular to the soundboard (class 322), and the open-harp versus frame-harp split."},{"title":"Harp - Grove Music Online (Oxford University Press)","url":"","note":"Concert, folk, historical and regional harp types; pedal mechanism; orchestral use; distinction from lyres and zithers."},{"title":"Harps and Harpists - Roslyn Rensch (Indiana University Press, 2nd ed. 2007)","url":"","note":"Construction, stringing, concert-harp dimensions, and the European pedal-harp lineage from Érard onward."},{"title":"Harp - Encyclopaedia Britannica (Encyclopædia Britannica, Inc.)","url":"https://www.britannica.com/art/harp","note":"General morphology, historical arched and angular forms, and the modern orchestral harp as the default Western reference."},{"title":"Wikidata item Q47369: harp","url":"https://www.wikidata.org/wiki/Q47369","note":"identity and sense of the item"},{"title":"Wikipedia: Harp","url":"https://en.wikipedia.org/wiki/Harp","note":"general description of the item"}],"openQuestions":["Does an existing Vercy world model already cover harp, requiring this registry entry to link to it rather than establish a separate model?","Which harp traditions and unusual constructions must the recognition tests accommodate, and where are the boundaries with lyres and hybrid instruments?","Which authoritative sources establish string specifications, tuning limits and replacement procedures for each supported harp type?","How should normal construction-dependent soundboard or neck deformation be distinguished from damage requiring restricted use?","Which measurable tolerances for tuning stability, mechanism accuracy and acoustic response are justified for different intended uses?"],"resources":{"spec":"/models/things/publications/thing-q47369/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q47369/spec.json"],"providers":["Codex","Grok"],"researchStatus":"unreviewed","generatedAt":"2026-09-07T09:53:11Z","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":"filled","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 2026-10-07T10:10:31+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}