# Identification probe result

The dossier describes a two-voice keyboard movement in D major (two sharps, 4/4): an opening theme of D5–F♯5–A5 over a broken D–A–F♯–A eighth-note accompaniment, galant cadence figures with trills, continuous sixteenth-note scalar passagework, a modulatory sequence through B minor (A♯ leading tones), and a thematic return transposed to the subdominant (G major) partway through a binary second part totaling 45 measures. This is a strongly generic galant/early-Classical (or late-Baroque) keyboard sonata idiom. The materials — triadic head-motive, Alberti-like bass, trill cadences, scale runs, rounded binary with subdominant reprise — are shared by dozens of works (Haydn, early Mozart, Scarlatti-adjacent repertoire), and nothing in the window is distinctive enough for me to assert a specific work without guessing. I therefore report a style-only resemblance rather than an identification.

## Run metadata

- Case: CASE-VT57
- Condition: symbolic dossier only; no external lookup performed or available
- Analyst model: claude-fable-5
- Date: 2026-07-19

## 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", "E003", "E004", "E009", "E015", "E018"],
    "reason": "D-major two-voice binary keyboard movement: triadic D-F#-A head-motive over broken-chord eighth-note bass, trill cadences, sixteenth-note runs, B-minor sequence, subdominant thematic return. Idiom is galant/early-Classical sonata style shared by many works; no feature is unique enough to support naming a specific piece."
  }
}
```

## Limitations

I worked only from the symbolic dossier; I could not audition the music or consult any reference. The windows omit tempo, instrument, and absolute measure positions, and the encoding is transposed to a common tonic, all of which reduce identifiability. My style-level judgment (galant keyboard sonata, rounded binary) rests on texture and harmonic plan, which are weak discriminators in this repertoire. A specific candidate might be recoverable by someone with score access, but I cannot support one from this evidence, so the null identification should not be read as proof of obscurity.
