{
  "status": "success",
  "overall": 7.66,
  "grade": "A",
  "needs_review": false,
  "showcase_candidate": false,
  "flags": [],
  "dimensions": {
    "production": {
      "score": 6.5,
      "issues": [
        "Frequency balance far from jazz reference (avg deviation 32%)",
        "Peak at 0.2 dBFS, likely clipping"
      ],
      "metrics": {
        "lufs": -9.1,
        "crest": 12.300000190734863,
        "peak": 0.20000000298023224,
        "width": 11.5,
        "low_pct": 61.79999923706055,
        "mid_pct": 35.5,
        "high_pct": 2.700000047683716,
        "genre": "jazz",
        "freq_deviation": 31.7
      }
    },
    "lyrics_fit": {
      "score": 8.5,
      "issues": [
        "Lyrics too dense (9.2 chars/sec), may not fit timing"
      ],
      "density": 9.21,
      "rhyme_ratio": 0.378,
      "repetition_ratio": 0.161,
      "line_count": 56,
      "has_verse": true,
      "has_chorus": true
    },
    "originality": {
      "score": 9.99,
      "similarity_pct": 0.1,
      "issues": []
    },
    "melody_proxy": {
      "score": 5.6,
      "factors": {
        "key_confidence": 0.9556,
        "beat_regularity": 0.856,
        "bpm_confidence": 0.1695,
        "chromagram_focus": 0.0271
      },
      "issues": [
        "Unclear tempo (BPM confidence 0.17)",
        "Chromagram very spread, weak tonal focus"
      ]
    },
    "vocal_presence": {
      "score": 8.0,
      "mid_pct": 35.5,
      "centroid": 562.0,
      "issues": [
        "Mid-range energy moderate (35.5%), vocals may not stand out",
        "Spectral centroid low (562Hz), mix is bass-heavy"
      ]
    },
    "aesthetic": {
      "score": 8.25,
      "sub_scores": {
        "musicality": 8.5,
        "vocal_quality": 8.0,
        "arrangement": 8.5,
        "emotional_impact": 8.0
      },
      "summary": "A well-produced, atmospheric Mandopop ballad with a cohesive arrangement and a gentle, emotive vocal performance that fits the genre perfectly.",
      "issues": [],
      "model": "gemini-3.1-flash-lite-preview",
      "songs_scored": 2,
      "per_song": [
        {
          "score": 8.25,
          "sub_scores": {
            "musicality": 8.5,
            "vocal_quality": 8.0,
            "arrangement": 8.5,
            "emotional_impact": 8.0
          },
          "summary": "A well-produced, atmospheric Mandopop ballad with a cohesive arrangement and a gentle, emotive vocal performance that fits the genre perfectly.",
          "issues": [],
          "model": "gemini-3.1-flash-lite-preview",
          "file": "suno_mixed_0.mp3",
          "index": 0
        },
        {
          "score": 8.25,
          "sub_scores": {
            "musicality": 8.5,
            "vocal_quality": 8.0,
            "arrangement": 8.5,
            "emotional_impact": 8.0
          },
          "summary": "A well-structured and atmospheric Mandopop ballad with a cohesive arrangement and a gentle, emotive vocal performance that fits the genre perfectly.",
          "issues": [],
          "model": "gemini-3.1-flash-lite-preview",
          "file": "suno_mixed_1.mp3",
          "index": 1
        }
      ]
    }
  },
  "elapsed_s": 0.003
}