[
  {
    "FAL": "caption",
    "DATA": [
      "id3v2|comments|album->Causal\\Extractor\\Utility\\Array_::concatenate(', ')",
      "id3v1|comments|album",
      "quicktime|comments|album->Causal\\Extractor\\Utility\\Array_::concatenate(', ')"
    ]
  },
  {
    "FAL": "copyright",
    "DATA": [
      "id3v2|comments|copyright_message->Causal\\Extractor\\Utility\\Array_::concatenate('-')",
      "id3v2|comments|year->Causal\\Extractor\\Utility\\Array_::concatenate('-')",
      "id3v1|comments|year"
    ]
  },
  {
    "FAL": "creator",
    "DATA": [
      "id3v2|comments|artist->Causal\\Extractor\\Utility\\Array_::concatenate(', ')",
      "id3v1|comments|artist",
      "quicktime|comments|artist->Causal\\Extractor\\Utility\\Array_::concatenate(', ')"
    ]
  },
  {
    "FAL": "creator_tool",
    "DATA": [
      "audio|encoder",
      "quicktime|comments|encoding_tool->Causal\\Extractor\\Utility\\Array_::concatenate(', ')"
    ]
  },
  {
    "FAL": "content_creation_date",
    "DATA": [
      "quicktime|comments|creation_date|0->Causal\\Extractor\\Utility\\DateTime::timestamp"
    ]
  },
  {
    "FAL": "description",
    "DATA": "id3v1|comment"
  },
  {
    "FAL": "duration",
    "DATA": "playtime_seconds->Causal\\Extractor\\Utility\\Number::castInteger"
  },
  {
    "FAL": "title",
    "DATA": [
      "id3v2|comments|title->Causal\\Extractor\\Utility\\Array_::concatenate(', ')",
      "quicktime|comments|title->Causal\\Extractor\\Utility\\Array_::concatenate(', ')"
    ]
  }
]