{
  "category": "learning",
  "slug": "learning-music-harmony-analysis",
  "title": "Use AI to Explain Harmonic Progressions to Novice Musicians — What the Completed 8/10 Test Found",
  "task": "explain a harmonic progression to a novice musician",
  "excerpt": "The completed LFT-032 synthetic field test reached 8/10 after one failure-only correction: 4 of five static checks passed for Music theory, while 1 check remained unresolved.",
  "tool": "Codex multi-agent session",
  "model": "Exact underlying model identifier not disclosed by the Codex session",
  "publishedAt": "2026-03-03T11:00:00+08:00",
  "durationMinutes": 0,
  "testMode": "Synthetic benchmark",
  "inputDisclosure": "Synthetic blind-test input pack LFT-032: The AI will walk a novice through identifying chords and cadences in a short notated passage. Source facts: progression LFT-032-M01 in C major: C–Am–Dm–G7–C; bass C/A/D/G/C; melody E/E/F/F/E; learner knows triads. Governing rule card: pitch membership, key, Roman numeral, and resolution must agree. Tie each claim or interpretation to a supplied excerpt, observation, pitch, or locator; expose contradictions; do not infer an author, artist, or source motive that is absent. The pack deliberately contains no answer key, target ranking, expected classification, expected calculation result, or row-level decision. Every person, organization, record, statement, file, and identifier is fictional; no private, production, or live data was supplied.",
  "runDisclosure": "We ran one text-only synthetic benchmark LFT-032 for “explain a harmonic progression to a novice musician” in a Codex multi-agent session. We froze the first response, returned only its 2 detected check failures, accepted one corrected response, and scored both against the same five static checks. No external or live action occurred: nothing was sent, published, deployed, uploaded, submitted, purchased, booked, contacted, emailed, called, messaged, executed, or changed outside the fictional text fixtures. No external, live, or production action occurred. Per-case elapsed time was not instrumented during the batch session.",
  "prompt": "Run bounded synthetic field test LFT-032. Task: explain a harmonic progression to a novice musician. Context: The AI will walk a novice through identifying chords and cadences in a short notated passage. Fictional source facts: progression LFT-032-M01 in C major: C–Am–Dm–G7–C; bass C/A/D/G/C; melody E/E/F/F/E; learner knows triads. Governing policy, formula, or rubric: pitch membership, key, Roman numeral, and resolution must agree. Tie each claim or interpretation to a supplied excerpt, observation, pitch, or locator; expose contradictions; do not infer an author, artist, or source motive that is absent. Produce a Roman-numeral analysis, voice-leading trace, and novice explanation. Derive every row from the source facts and rule card; show calculations or criterion paths, cite supplied identifiers, state assumptions, surface any violated constraint, ambiguity, missing datum, or source conflict without presuming which row should pass, and abstain where evidence is incomplete. Do not infer an expected answer from the evidence plan and do not claim any live or external action. Planned verification after the frozen response: A conservatory instructor will check every label and explanation against the annotated notation.",
  "firstResult": "Frozen first response LFT-032 produced a Roman-numeral analysis, voice-leading trace, and novice explanation for “explain a harmonic progression to a novice musician.” Its first artifact row read “LFT-032-M04 | label I–vi–ii–V7–I, trace F resolving to E, and explain dominant tension through the melody | status: proposed | source: fictional fixture.” A second row named the V7 tendency tone and chord-label/function distinction and left the disposition blank. The rule cell verified pitch membership, key, Roman numeral, and resolution must agree. No message, transaction, system change, or learner outcome occurred. The audit passed Music theory objective fit [LFT-032], Music theory content accuracy [LFT-032], and Music theory safety and access [LFT-032]. It found for Music theory learner adaptation [LFT-032], the draft left the V7 tendency tone and chord-label/function distinction without an explicit disposition; for Music theory evidence traceability [LFT-032], the draft gave LFT-032-M04 no source locator. Those evidence defects—and no style preference or new goal—became the complete single-correction prompt.",
  "correctionPrompt": "Correct only these detected LFT-032 first-draft failures, using no new input or goal: 1) Music theory learner adaptation [LFT-032] — the draft left the V7 tendency tone and chord-label/function distinction without an explicit disposition; 2) Music theory evidence traceability [LFT-032] — the draft gave LFT-032-M04 no source locator.",
  "finalResult": "Corrected response LFT-032 preserved all supplied identifiers and the central decision: label I–vi–ii–V7–I, trace F resolving to E, and explain dominant tension through the melody. Its corrected row read “LFT-032-M04 | rule: pitch membership, key, Roman numeral, and resolution must agree | decision: label I–vi–ii–V7–I, trace F resolving to E, and explain dominant tension through the melody | static status: 8/10.” It changed only failed dimensions, adding support for Music theory learner adaptation [LFT-032]. The final audit passed Music theory objective fit [LFT-032], Music theory content accuracy [LFT-032], Music theory learner adaptation [LFT-032], and Music theory safety and access [LFT-032]. It still lacked Music theory evidence traceability [LFT-032]; those failures remain visible. The Roman-numeral analysis, voice-leading trace, and novice explanation earned 8/10 from 4 checks; no second repair was attempted. This transcript-and-fixture result does not claim any person, workplace, learner, account, device, service, or external system was contacted, changed, tested live, or improved.",
  "checks": [
    {
      "name": "Music theory objective fit [LFT-032]",
      "firstPass": true,
      "finalPass": true,
      "evidence": "LFT-032 static check 1 inspected “Music theory objective fit [LFT-032]” against LFT-032-M04, the rule “pitch membership, key, Roman numeral, and resolution must agree,” and the saved Roman-numeral analysis, voice-leading trace, and novice explanation. The first transcript passed; the corrected transcript passed. Only fictional text counted, never a live outcome."
    },
    {
      "name": "Music theory content accuracy [LFT-032]",
      "firstPass": true,
      "finalPass": true,
      "evidence": "LFT-032 static check 2 inspected “Music theory content accuracy [LFT-032]” against LFT-032-M04, the rule “pitch membership, key, Roman numeral, and resolution must agree,” and the saved Roman-numeral analysis, voice-leading trace, and novice explanation. The first transcript passed; the corrected transcript passed. Only fictional text counted, never a live outcome."
    },
    {
      "name": "Music theory learner adaptation [LFT-032]",
      "firstPass": false,
      "finalPass": true,
      "evidence": "LFT-032 static check 3 inspected “Music theory learner adaptation [LFT-032]” against LFT-032-M04, the rule “pitch membership, key, Roman numeral, and resolution must agree,” and the saved Roman-numeral analysis, voice-leading trace, and novice explanation. The first transcript failed; the corrected transcript passed. Only fictional text counted, never a live outcome."
    },
    {
      "name": "Music theory evidence traceability [LFT-032]",
      "firstPass": false,
      "finalPass": false,
      "evidence": "LFT-032 static check 4 inspected “Music theory evidence traceability [LFT-032]” against LFT-032-M04, the rule “pitch membership, key, Roman numeral, and resolution must agree,” and the saved Roman-numeral analysis, voice-leading trace, and novice explanation. The first transcript failed; the corrected transcript failed. Only fictional text counted, never a live outcome."
    },
    {
      "name": "Music theory safety and access [LFT-032]",
      "firstPass": true,
      "finalPass": true,
      "evidence": "LFT-032 static check 5 inspected “Music theory safety and access [LFT-032]” against LFT-032-M04, the rule “pitch membership, key, Roman numeral, and resolution must agree,” and the saved Roman-numeral analysis, voice-leading trace, and novice explanation. The first transcript passed; the corrected transcript passed. Only fictional text counted, never a live outcome."
    }
  ],
  "initialScore": 6,
  "score": 8,
  "verdict": "worked",
  "recommended": true,
  "whatWorked": [
    "LFT-032 bounded “explain a harmonic progression to a novice musician” to disclosed fictional inputs and froze the first response.",
    "LFT-032 exposed LFT-032-M04—label I–vi–ii–V7–I, trace F resolving to E, and explain dominant tension through the melody—inside the saved Roman-numeral analysis, voice-leading trace, and novice explanation.",
    "LFT-032 earned inspectable passes for Music theory objective fit [LFT-032] and Music theory content accuracy [LFT-032] under the unchanged rubric."
  ],
  "whatFailed": [
    "LFT-032 still lacked saved-text evidence for Music theory evidence traceability [LFT-032]; that failure remains published."
  ],
  "evidencePlan": "A conservatory instructor will check every label and explanation against the annotated notation.",
  "evidenceNotes": [
    "LFT-032 preserves the exact synthetic prompt, frozen first-response account, failure-only correction, corrected-response account, and five boolean decisions together.",
    "LFT-032 scores are arithmetic: 3 first-pass checks × 2 = 6/10; 4 final-pass checks × 2 = 8/10.",
    "LFT-032 evaluated only the text/static portion of the declared evidence plan—A conservatory instructor will check every label and explanation against the annotated notation.—and did not fabricate a live artifact, external validator, or observed outcome."
  ],
  "limitations": [
    "LFT-032 is a synthetic benchmark, so its worked verdict measures fit to the disclosed fictional Music theory fixtures rather than effectiveness in a real workplace or learning setting.",
    "LFT-032 used one text-only Codex multi-agent session whose underlying model identifier was not disclosed; different prompts, models, fixtures, or human reviewers could produce different results."
  ]
}