# Analysis result

The dossier supports a tonic double return with high confidence. The candidate window restates the opening theme almost note-for-note in the home key of D over root-position tonic octaves, after a four-measure dominant pedal retransition with chromatically ascending inner voices, and the continuation window keeps unfolding the opening rotation in the tonic.

## Run metadata

- Analyst model: claude-fable-5 (Anthropic Claude Agent SDK session).
- No tools, internet access, or external data were used; analysis relies solely on the embedded dossier.
- Decoding settings (temperature, sampling): unknown to the analyst.

## Machine-readable result

```json
{
  "schema_version": "2.1.0",
  "analyst_model": "claude-fable-5",
  "case_id": "CASE-D09B",
  "cues": {
    "tonal_stability": {
      "score": 4,
      "evidence_ids": ["E016", "E017", "E024", "E025"],
      "reason": "Observed: return begins on D3/D4 octaves outlining D-A-D-F#, key signature unchanged; continuation prolongs D with arpeggiated tonic bass. Inference: home tonic is structurally stable, not a passing sequence."
    },
    "thematic_correspondence": {
      "score": 4,
      "evidence_ids": ["E002", "E016", "E003", "E017", "E007", "E021", "E008", "E022"],
      "reason": "Observed: W3 measures 0-5 and W4 measures 0-1 reproduce W1 measures 0-7 nearly exactly, including trills; only the opening pickup and one staccato differ. Inference: identity-level restatement of the opening theme."
    },
    "preparation_strength": {
      "score": 4,
      "evidence_ids": ["E010", "E011", "E012", "E013", "E014", "E015"],
      "reason": "Observed: four measures of sustained A5 over A3/A2 bass with chromatic ascents (Bb-B, C-C#, D-D#), then a descending run to A2 marked f. Inference: strong dominant-pedal retransition into the return."
    },
    "proportional_location": {
      "score": 3,
      "evidence_ids": ["E016"],
      "reason": "Observed: candidate onset at 241/2 of 613/2 quarter notes, about 39% through the second part. Inference: slightly early but fully compatible with a recapitulatory division; substantial rather than decisive support."
    },
    "rhetorical_emphasis": {
      "score": 3,
      "evidence_ids": ["DR0003", "E015", "E016", "E001"],
      "reason": "Observed: forte marked on the bass A arrival just before the return, mirroring the opening's forte pickup; texture drops to the opening's bare octaves. Inference: clear arrival rhetoric, though no dynamic at the downbeat itself."
    },
    "rotational_continuation": {
      "score": 4,
      "evidence_ids": ["E022", "E023", "E024", "E025", "E026", "E027"],
      "reason": "Observed: continuation tracks W1 measures 6-7, then expands D-major arpeggiation over tonic bass before moving to G (IV). Inference: behaves as an unfolding recapitulatory rotation, not continued development or sequence."
    }
  },
  "status_distribution": {
    "not_recapitulation": 0.02,
    "off_tonic_recapitulation": 0.02,
    "tonic_double_return": 0.96
  },
  "suspected_recognition": {"level": "style", "confidence": 0.3},
  "case_note": "Dominant-pedal retransition with chromatic ascent resolves into a near-verbatim tonic restatement of the opening theme, followed by tonic-prolonging continuation; all six cues converge on a tonic double return."
}
```

## Limitations

Missing dossier evidence: no dynamic marking at the return downbeat itself; whether W4 immediately follows W3 is implied by its "continuation" role but not stated, and gaps between windows are unspecified; the exposition's secondary material is not supplied, so I cannot verify later rotational completeness. Analytical uncertainty: the ~39% second-part location is somewhat early for a recapitulation, and the absent pickup measure at the return is a small deviation; both are outweighed by the exact thematic and tonal correspondence. Familiarity is reported only via `suspected_recognition` and was not used as evidence.
