{
  "accessedDateUTC": "2026-09-15",
  "sources": [
    {
      "url": "https://www.berklee.edu/berklee-now/news/berklee-riffs-natural-music-in-language",
      "supports": "Speech stress, repetition and rhythm as songwriting material; does not rank these recordings."
    },
    {
      "url": "https://online.berklee.edu/courses/songwriting-tools-and-techniques",
      "supports": "Prosody alignment across lyric, melody and overall intention; no measured preference claim."
    },
    {
      "url": "https://librosa.org/doc/0.11.0/generated/librosa.pyin.html",
      "supports": "F0 estimation, voiced flags/probabilities, algorithm parameters; does not provide a verified score."
    }
  ]
}