# Analysis result

## Run metadata

Analyst model: GPT-5-based Codex  
Provider: OpenAI  
Settings: unknown  
Tools were available but not used. Network access was restricted, and no external data were used.

## Machine-readable result

```json
{
  "schema_version": "2.1.0",
  "analyst_model": "GPT-5-based Codex",
  "case_id": "CASE-VT57",
  "cues": {
    "tonal_stability": {
      "score": 0,
      "evidence_ids": ["E015", "E016"],
      "reason": "Observed: the candidate begins with an explicit G-B-D sonority and continues in G-centered harmony. Inference: home-tonic D is not structurally stable at the return."
    },
    "thematic_correspondence": {
      "score": 4,
      "evidence_ids": ["E001", "E002", "E003", "E004", "E005", "E006", "E015", "E016", "E017", "E018", "E019", "E020"],
      "reason": "Observed: six candidate measures reproduce the opening melody, rhythm, texture, and ornaments through systematic transposition from D to G. Inference: this is an extensive opening-theme return."
    },
    "preparation_strength": {
      "score": 4,
      "evidence_ids": ["E014", "E015"],
      "reason": "Observed: D-A-C support and an ascending line ending on F-sharp immediately precede the G-major arrival. Inference: dominant-seventh function and leading-tone resolution strongly prepare G."
    },
    "proportional_location": {
      "score": 3,
      "evidence_ids": ["E015"],
      "reason": "Observed: the candidate occurs 52 of 180 quarter-notes into the second part. Inference: this relatively early location remains substantially compatible with a development-to-recapitulation division."
    },
    "rhetorical_emphasis": {
      "score": 3,
      "evidence_ids": ["E014", "E015"],
      "reason": "Observed: rapid sequential motion yields on a downbeat to sustained melody and continuous broken-chord accompaniment, without dynamic, articulation, or barline emphasis. Inference: texture and harmonic arrival provide substantial salience."
    },
    "rotational_continuation": {
      "score": 4,
      "evidence_ids": ["E002", "E003", "E004", "E005", "E006", "E007", "E008", "E016", "E017", "E018", "E019", "E020", "E021", "E022"],
      "reason": "Observed: the music following the candidate continues reproducing the opening sequence through eight corresponding measures in transposition. Inference: sustained rotational correspondence strongly favors recapitulatory continuation over development."
    }
  },
  "status_distribution": {
    "not_recapitulation": 0.014,
    "off_tonic_recapitulation": 0.985,
    "tonic_double_return": 0.001
  },
  "suspected_recognition": {
    "level": "style",
    "confidence": 0.85
  },
  "case_note": "The opening rotation returns extensively in stable G major, away from home-tonic D, after strong dominant preparation and continues systematically."
}
```

## Limitations

The dossier supplies symbolic windows rather than audio or performance-specific nuance, and it omits the first part’s total duration and broader formal segmentation. These absences especially limit proportional and rhetorical assessment. Analytical uncertainty remains over whether an extensive off-tonic rotation could function as a deliberately deceptive return, although its sustained correspondence strongly favors recapitulatory status.