# Analysis result

The candidate at W3 presents the opening theme intact but transposed to the subdominant (G major), prepared by a dominant-seventh of G, with the continuation working back to the D-major tonic. The evidence best supports an off-tonic (subdominant) recapitulation rather than a tonic double return.

Key observations from the dossier:

- **W1 (E001–E008)** establishes a D-major theme: sustained melody notes over an alternating D–A figuration bass, an ornamented third measure reaching D6, a trill in the fourth measure, then sixteenth-note scalar runs.
- **W2 (E009–E014)** is sequential and unstable (A♯ bass notes, descending bass D–C♯–B–A♯), ending on a sustained D–A–C♮ sonority (E014) — a dominant seventh of G.
- **W3 (E015–E020)** restates the opening measure-for-measure a perfect fourth higher: the same figuration bass now G–D–B–D, the parallel ornamented climax (G6, E017), the parallel trill (E018), and parallel runs (E019–E020), all with C♮ confirming G major.
- **W4 (E021–E026)** moves through walking-bass harmonies back to D: C♯ reappears (E024), an A-bass chord with C♯ and G (dominant seventh of D, E025) resolves to D bass with D/F♯ above (E026).

## Run metadata

- Analyst model: claude-fable-5 (Claude Agent SDK environment; provider Anthropic).
- Sampling settings: not observable from within the session (unknown).
- Tools and external data: file/shell tools existed in the harness but none were used; no internet, retrieval, or external files were accessed. Analysis used only the embedded dossier.

## Machine-readable result

```json
{
  "schema_version": "2.1.0",
  "analyst_model": "claude-fable-5",
  "case_id": "CASE-VT57",
  "cues": {
    "tonal_stability": {
      "score": 1,
      "evidence_ids": ["E015", "E016", "E017", "E019"],
      "reason": "Observed: candidate harmonies center on G with C-natural (E019) and G-D-B figuration (E015). Inference: locally stable, but in the subdominant, not the D home tonic; home-tonic stability is weak."
    },
    "thematic_correspondence": {
      "score": 4,
      "evidence_ids": ["E001", "E004", "E005", "E015", "E018", "E019"],
      "reason": "Observed: E015-E020 replicate E001-E006 a fourth higher, including figuration bass, ornamented climax, parallel trill (E004/E018), and scalar runs (E005/E019). Inference: full, extended opening-theme return, transposed."
    },
    "preparation_strength": {
      "score": 3,
      "evidence_ids": ["E014"],
      "reason": "Observed: E014 ends with sustained D-A-C-natural sonority after sequential descent. Inference: dominant-seventh preparation targeting G, giving real cadential preparation for the arrival, though of the subdominant rather than the home key."
    },
    "proportional_location": {
      "score": 3,
      "evidence_ids": ["E015"],
      "reason": "Observed: candidate onset at 52 of 180 quarter notes (about 29%) into the second part. Inference: compatible with a recapitulatory division following a short developmental span, though somewhat early."
    },
    "rhetorical_emphasis": {
      "score": 2,
      "evidence_ids": ["E014", "E015"],
      "reason": "Observed: no dynamics or articulation marks anywhere despite complete coverage; texture resets from sequence to theme-plus-figuration after a sustained chord (E014). Inference: arrival marked by texture and rhythm only; moderate emphasis."
    },
    "rotational_continuation": {
      "score": 3,
      "evidence_ids": ["E021", "E024", "E025", "E026"],
      "reason": "Observed: continuation reintroduces C-sharp (E024), reaches an A-bass dominant seventh (E025), and lands on D with D/F-sharp above (E026). Inference: behaves as recapitulation steering back to tonic, not open-ended sequencing."
    }
  },
  "status_distribution": {
    "not_recapitulation": 0.13,
    "off_tonic_recapitulation": 0.82,
    "tonic_double_return": 0.05
  },
  "suspected_recognition": {"level": "style", "confidence": 0.3},
  "case_note": "Opening theme returns essentially complete but in the subdominant, prepared by V7 of IV, with the continuation resolving back to the D tonic; the profile fits a subdominant (off-tonic) recapitulation rather than a tonic double return."
}
```

## Limitations

Missing dossier evidence: no dynamics, tempo, or expressive directions appear anywhere, so rhetorical emphasis rests on texture and rhythm alone; the gap between W2 and W3 windows and the unshown remainder of the second part limit certainty about preparation continuity and proportional placement. Analytical uncertainty: the continuation's walking-bass passages could be read as further sequence rather than recapitulatory tonal resolution, which sustains the residual probability on not_recapitulation. Stylistic familiarity (reported under suspected_recognition) was not used as evidence.
