# Analysis result

## Run metadata

Model: GPT-5-based Codex  
Provider: OpenAI  
Settings: unknown  
Tools: available but not used  
External data: unavailable and prohibited

## Machine-readable result

```json
{
  "schema_version": "2.1.0",
  "analyst_model": "GPT-5-based Codex",
  "case_id": "CASE-D09B",
  "cues": {
    "tonal_stability": {
      "score": 4,
      "evidence_ids": ["E016", "E017", "E018"],
      "reason": "Observed: the candidate begins with octave D and unfolds D–A–D–F-sharp tonic material. Inference: the home tonic is unequivocally established at the return."
    },
    "thematic_correspondence": {
      "score": 4,
      "evidence_ids": ["E002", "E003", "E004", "E005", "E006", "E007", "E016", "E017", "E018", "E019", "E020", "E021"],
      "reason": "Observed: six candidate measures reproduce the opening’s pitches, rhythms, voices, ornaments, and rests almost exactly. Inference: this is an extensive opening-theme return."
    },
    "preparation_strength": {
      "score": 3,
      "evidence_ids": ["E010", "E011", "E012", "E013", "E014", "E015", "E016"],
      "reason": "Observed: a sustained upper A spans sequential harmonies, followed by a forte descent and low A immediately before D. Inference: dominant emphasis and directed motion substantially prepare the arrival."
    },
    "proportional_location": {
      "score": 4,
      "evidence_ids": ["E016"],
      "reason": "Observed: the candidate occurs 120.5 quarter-notes into a 306.5-quarter-note second part, approximately 39.3 percent. Inference: this strongly fits a recapitulatory division."
    },
    "rhetorical_emphasis": {
      "score": 3,
      "evidence_ids": ["E014", "E015", "E016"],
      "reason": "Observed: forte passagework descends into a low A, then changes to registrally doubled D-theme octaves. Inference: the textural and registral arrival is substantial despite no new dynamic at the candidate."
    },
    "rotational_continuation": {
      "score": 4,
      "evidence_ids": ["E006", "E007", "E008", "E009", "E020", "E021", "E022", "E023"],
      "reason": "Observed: post-candidate material continues reproducing the opening rotation through corresponding E- and B-based passages and subsequent figuration. Inference: sustained ordered correspondence strongly favors recapitulation over development."
    }
  },
  "status_distribution": {
    "not_recapitulation": 0.002,
    "off_tonic_recapitulation": 0.001,
    "tonic_double_return": 0.997
  },
  "suspected_recognition": {
    "level": "work",
    "confidence": 0.72
  },
  "case_note": "The candidate combines an exact opening-theme return with immediate home-tonic restoration and continued rotational correspondence, strongly supporting a tonic double return."
}
```

## Limitations

The dossier supplies only selected windows rather than the complete second part, so the broader tonal path and eventual closure cannot be checked directly. No audio or performance evidence is available; rhetorical weight is inferred from symbolic dynamics, register, texture, and articulation. The preparation’s harmonic function and the formal significance of the proportional location remain analytical judgments, although the extensive opening-to-candidate correspondence substantially reduces classification uncertainty.