{
  "status": "success",
  "overall": 8.38,
  "grade": "A",
  "needs_review": false,
  "showcase_candidate": true,
  "flags": [],
  "dimensions": {
    "production": {
      "score": 6.5,
      "issues": [
        "Frequency balance far from edm reference (avg deviation 26%)",
        "Peak at 0.1 dBFS, likely clipping"
      ],
      "metrics": {
        "lufs": -9.3,
        "crest": 11.5,
        "peak": 0.10000000149011612,
        "width": 6.199999809265137,
        "low_pct": 47.400001525878906,
        "mid_pct": 50.599998474121094,
        "high_pct": 2.0,
        "genre": "edm",
        "freq_deviation": 26.4
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    },
    "lyrics_fit": {
      "score": 8.5,
      "issues": [
        "Lyrics too dense (12.1 chars/sec), may not fit timing"
      ],
      "density": 12.12,
      "rhyme_ratio": 0.326,
      "repetition_ratio": 0.169,
      "line_count": 65,
      "has_verse": true,
      "has_chorus": true
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    "originality": {
      "score": 10.0,
      "similarity_pct": 0.0,
      "issues": []
    },
    "melody_proxy": {
      "score": 7.55,
      "factors": {
        "key_confidence": 0.9275,
        "beat_regularity": 0.9113,
        "bpm_confidence": 1.0,
        "chromagram_focus": 0.0189
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      "issues": [
        "Chromagram very spread, weak tonal focus"
      ]
    },
    "vocal_presence": {
      "score": 9.5,
      "mid_pct": 50.6,
      "centroid": 667.0,
      "issues": [
        "Spectral centroid low (667Hz), mix is bass-heavy"
      ]
    },
    "aesthetic": {
      "score": 8.75,
      "sub_scores": {
        "musicality": 8.5,
        "vocal_quality": 9.0,
        "arrangement": 8.5,
        "emotional_impact": 9.0
      },
      "summary": "A beautifully intimate and well-produced acoustic folk-pop ballad that captures a sense of melancholic nostalgia. The vocal performance is exceptionally natural and emotive, perfectly complemented by ",
      "issues": [],
      "model": "gemini-3.1-flash-lite-preview",
      "songs_scored": 1,
      "per_song": [
        {
          "score": 8.75,
          "sub_scores": {
            "musicality": 8.5,
            "vocal_quality": 9.0,
            "arrangement": 8.5,
            "emotional_impact": 9.0
          },
          "summary": "A beautifully intimate and well-produced acoustic folk-pop ballad that captures a sense of melancholic nostalgia. The vocal performance is exceptionally natural and emotive, perfectly complemented by ",
          "issues": [],
          "model": "gemini-3.1-flash-lite-preview",
          "file": "suno_mixed_0.mp3",
          "index": 0
        },
        {
          "score": 0.0,
          "issues": [
            "Gemini API failed after retries"
          ],
          "skipped": true,
          "file": "suno_mixed_1.mp3",
          "index": 1
        }
      ]
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  },
  "elapsed_s": 0.008
}