# Identification probe result

## Run metadata

- Analyst model: claude-fable-5 (Claude Fable 5, Anthropic)
- Date of run: 2026-07-19
- Case: CASE-DZWT, symbolic condition, dossier-only access (no external lookup performed or available)
- Method: manual reading of the four encoded windows (W1 opening, W2 pre-candidate, W3 candidate return, W4 continuation)

**Assessment.** The dossier shows a D major movement in 3/4, two-voice keyboard texture, marked *p*, opening with both hands in parallel octaves outlining the tonic triad (D–A | F#–A | D–F# | A–D6), followed by a stepwise eighth-note descent over a dominant-seventh sonority, a chromatic lower-neighbor figure (G#), staccato/staccatissimo ascents with a written-out turn (D–E–C#–D), and a development-like passage (W2) with repeated-eighth dominant pedal on A and a chromatic bass descent through B♭. The candidate return restates the opening literally at 159 of 390 quarter notes into the second part, consistent with a recapitulation in a Classical-era sonata-form movement. All of this is idiomatic late-eighteenth-century keyboard writing (Haydn/Mozart/early Beethoven orbit), but the material is generic enough — triadic unison opening, scalar descents, galant turn figures — that I cannot honestly match it to a specific work from memory. No candidate composer-plus-work pairing rises above guessing, so I report a style-only resemblance.

## Machine-readable result

```json
{
  "schema_version": "2.1.0",
  "analyst_model": "claude-fable-5",
  "case_id": "CASE-DZWT",
  "identification": {
    "recognition_level": "style_only",
    "composer": null,
    "work": null,
    "movement": null,
    "confidence": 0.25,
    "evidence_ids": ["E001", "E002", "E003", "E004", "E005", "E007", "E010", "E015", "E026"],
    "reason": "D major 3/4 keyboard movement: unison-octave triadic opening, scalar descents, chromatic neighbor and turn figures, dominant pedal with chromatic bass in W2, literal thematic return mid-second-part. Idiomatic Classical sonata style, but material too generic to support naming a specific composer or work."
  }
}
```

## Limitations

Identification relies solely on symbolic content; no audio, title, tempo marking, or instrumentation metadata is present, and no external lookup was permitted. The diatonic triadic opening and galant figuration are shared across many Classical-era sonatas, minuet-finales, and sonatinas, so absence of recognition does not imply obscurity. Window-relative measure numbering prevents locating the excerpts within the full movement beyond the encoded elapsed-duration ratio. Confidence of 0.25 reflects the style-family claim only, not any specific-work hypothesis.
