# Identification probe result

I examined the dossier's four windows without external lookup. The evidence shows a two-voice keyboard movement in D major, 4/4, in rounded binary form: an opening theme (arpeggiated D-major melody over an eighth-note broken-chord bass with a recurring A4 alternation), a developmental passage with alternating-hand sixteenth-note figuration touching A-sharp (V/vi territory), and a candidate return that restates the opening theme transposed to the subdominant region (G) partway through the second half. This is idiomatic mid-eighteenth-century galant/late-Baroque solo keyboard writing, but no feature in the excerpt is distinctive enough for me to name a specific composer or work honestly. Several plausible candidates (Scarlatti-, Handel-, or early-Classical-style binary sonata movements) fit equally well, so claiming one would be a guess presented as recognition.

## Run metadata

- Analyst model: claude-fable-5 (Claude Fable 5)
- Date of run: 2026-07-19
- Case: CASE-VT57, symbolic condition, dossier-only access
- External lookup: none performed, per access boundary

## Machine-readable result

```json
{
  "schema_version": "2.1.0",
  "analyst_model": "claude-fable-5",
  "case_id": "CASE-VT57",
  "identification": {
    "recognition_level": "style_only",
    "composer": null,
    "work": null,
    "movement": null,
    "confidence": 0.15,
    "evidence_ids": ["E001", "E002", "E009", "E013", "E015", "E020"],
    "reason": "Two-voice D-major 4/4 keyboard movement in rounded binary form: arpeggiated theme over broken-chord bass, alternating-hand sixteenth runs, trills, subdominant-level thematic return mid-second-half. Idiomatic galant/late-Baroque style, but no feature uniquely fingerprints one composer or work."
  }
}
```

## Limitations

The excerpt is short, texturally generic for its era, and stripped of tempo, dynamics, and instrumentation cues that often disambiguate keyboard repertoire. Diatonic broken-chord accompaniments and scalar sixteenth figuration in D major are shared across hundreds of binary sonata movements (Scarlatti, Handel, Telemann, early Haydn, and lesser-known contemporaries), so absence of a specific match here does not establish the work is obscure. My style-period judgment could also be skewed if the encoding omits ornaments or voices that would change the texture's character.
