{
  "status": "success",
  "overall": 8.32,
  "grade": "A",
  "needs_review": false,
  "showcase_candidate": true,
  "flags": [],
  "dimensions": {
    "production": {
      "score": 8.5,
      "issues": [
        "Peak at 0.1 dBFS, likely clipping"
      ],
      "metrics": {
        "lufs": -9.8,
        "crest": 12.199999809265137,
        "peak": 0.10000000149011612,
        "width": 12.800000190734863,
        "low_pct": 42.5,
        "mid_pct": 54.900001525878906,
        "high_pct": 2.700000047683716,
        "genre": "pop",
        "freq_deviation": 7.7
      }
    },
    "lyrics_fit": {
      "score": 8.5,
      "issues": [
        "Lyrics too dense (18.7 chars/sec), may not fit timing"
      ],
      "density": 18.71,
      "rhyme_ratio": 0.252,
      "repetition_ratio": 0.146,
      "line_count": 89,
      "has_verse": true,
      "has_chorus": true
    },
    "originality": {
      "score": 9.47,
      "similarity_pct": 5.3,
      "issues": []
    },
    "melody_proxy": {
      "score": 5.0,
      "factors": {
        "key_confidence": 0.8628,
        "beat_regularity": 0.7553,
        "bpm_confidence": 0.0,
        "chromagram_focus": 0.0546
      },
      "issues": [
        "Unclear tempo (BPM confidence 0.00)",
        "Chromagram very spread, weak tonal focus"
      ]
    },
    "vocal_presence": {
      "score": 9.5,
      "mid_pct": 54.9,
      "centroid": 596.0,
      "issues": [
        "Spectral centroid low (596Hz), mix is bass-heavy"
      ]
    },
    "aesthetic": {
      "score": 8.86,
      "sub_scores": {
        "musicality": 8.5,
        "vocal_quality": 9.0,
        "arrangement": 8.8,
        "emotional_impact": 9.2
      },
      "summary": "A hauntingly beautiful and intimate minimalist ballad with exceptional vocal nuance. The felt piano and lush string pads create a deeply immersive, melancholic atmosphere.",
      "issues": [],
      "model": "gemini-3.1-flash-lite-preview",
      "songs_scored": 2,
      "per_song": [
        {
          "score": 8.75,
          "sub_scores": {
            "musicality": 8.5,
            "vocal_quality": 9.0,
            "arrangement": 8.5,
            "emotional_impact": 9.0
          },
          "summary": "A hauntingly beautiful and intimate ballad; the production choices, including the audible pedal noise and dry vocal, create a powerful sense of vulnerability and presence.",
          "issues": [],
          "model": "gemini-3.1-flash-lite-preview",
          "file": "suno_mixed_0.mp3",
          "index": 0
        },
        {
          "score": 8.97,
          "sub_scores": {
            "musicality": 8.5,
            "vocal_quality": 9.0,
            "arrangement": 9.0,
            "emotional_impact": 9.5
          },
          "summary": "A hauntingly beautiful and intimate minimalist ballad with exceptional vocal nuance. The felt piano and lush string pads create a deeply immersive, melancholic atmosphere.",
          "issues": [],
          "model": "gemini-3.1-flash-lite-preview",
          "file": "suno_mixed_1.mp3",
          "index": 1
        }
      ]
    }
  },
  "elapsed_s": 0.004
}