# Identification probe result

The dossier supports a specific candidate: Joseph Haydn’s Piano Sonata in D major, Hob. XVI:37, first movement (Allegro con brio).

## Run metadata

Case: CASE-Q2R9  
Analyst model: GPT-5 Codex  
Assessment basis: allowed symbolic dossier only

## Machine-readable result

```json
{
  "schema_version": "2.1.0",
  "analyst_model": "GPT-5 Codex",
  "case_id": "CASE-Q2R9",
  "identification": {
    "recognition_level": "specific_candidate",
    "composer": "Joseph Haydn",
    "work": "Piano Sonata in D major, Hob. XVI:37",
    "movement": "I. Allegro con brio",
    "confidence": 0.88,
    "evidence_ids": ["E001", "E002", "E003", "E016", "E017", "E018"],
    "reason": "The distinctive ornamented upbeat, descending D-major opening melody, broken-chord accompaniment, and its later structural return closely match the first movement of Haydn's Hob. XVI:37."
  }
}
```

## Limitations

The identification is inferred solely from symbolic pitch, rhythm, texture, and formal placement. No title, instrumentation label, tempo marking, source attribution, or external comparison was available; therefore the catalogue and movement remain a high-confidence candidate rather than independently verified recognition.