{
  "id": "violao_7_cordas",
  "name": "Violão de 7 cordas (Brazilian 7-string guitar)",
  "family": "acoustic_strings",
  "class": "plucked",
  "axes": {
    "pitchFix": 0,
    "sustain": -1,
    "polyphony": 1,
    "harmonicity": 1,
    "register": -1,
    "range": 1,
    "articulation": 1,
    "transduction": -2,
    "dynamics": 0
  },
  "short": "violão 7",
  "parts": [
    {
      "id": "violao_7_string7",
      "name": "7th-string tuning",
      "variants": [
        {
          "id": "violao_7_low_C",
          "default": true,
          "name": "Low C (modern standard)",
          "descriptors": [
            "extended-bass-reach",
            "choro-bordao",
            "wood"
          ],
          "match_tokens": [
            "plucked",
            "choro-tradition",
            "bordão-counter-melody"
          ]
        },
        {
          "id": "violao_7_low_B",
          "name": "Low B (older convention)",
          "descriptors": [
            "extended-bass-reach",
            "traditional",
            "wood"
          ],
          "match_tokens": [
            "plucked",
            "choro-tradition"
          ]
        }
      ]
    },
    {
      "id": "violao_7_strings",
      "name": "String type",
      "variants": [
        {
          "id": "violao_7_nylon",
          "default": true,
          "name": "Nylon (choro canonical)",
          "descriptors": [
            "warm",
            "choro-tradition",
            "nylon-canonical"
          ],
          "match_tokens": [
            "plucked",
            "choro-tradition"
          ]
        },
        {
          "id": "violao_7_steel",
          "name": "Steel (samba-pagode)",
          "descriptors": [
            "bright",
            "piercing",
            "steel"
          ],
          "match_tokens": [
            "plucked"
          ]
        },
        {
          "id": "violao_7_gut_historical",
          "name": "Gut (pre-1950s historical choro)",
          "descriptors": [
            "gut-pre-1950s-historical-choro"
          ],
          "match_tokens": [
            "plucked",
            "choro-tradition",
            "period-performance"
          ],
          "canonical_tags": [
            "historical-gut"
          ]
        }
      ]
    },
    {
      "id": "violao_7_body_wood",
      "surface": false,
      "name": "Back / sides wood",
      "variants": [
        {
          "id": "violao_7_brazilian_rosewood",
          "default": true,
          "name": "Brazilian rosewood (pre-1992 canonical choro)",
          "descriptors": [
            "brazilian-rosewood-pre-1992-choro"
          ],
          "match_tokens": [
            "plucked",
            "choro-tradition"
          ],
          "canonical_tags": [
            "cites-app-i",
            "vintage"
          ]
        },
        {
          "id": "violao_7_indian_rosewood",
          "name": "Indian rosewood (modern alternative)",
          "descriptors": [
            "indian-rosewood"
          ],
          "match_tokens": [
            "plucked"
          ],
          "canonical_tags": [
            "cites-app-ii"
          ]
        },
        {
          "id": "violao_7_pau_ferro",
          "name": "Pau-ferro (modern CITES-friendly)",
          "descriptors": [
            "pau-ferro"
          ],
          "match_tokens": [
            "plucked"
          ]
        }
      ]
    },
    {
      "id": "violao_7_top_wood",
      "surface": false,
      "name": "Top wood",
      "variants": [
        {
          "id": "violao_7_cedar_top",
          "default": true,
          "name": "Cedar top (canonical choro warmth)",
          "descriptors": [
            "cedar-canonical-choro"
          ],
          "match_tokens": [
            "plucked",
            "choro-tradition"
          ]
        },
        {
          "id": "violao_7_spruce_top",
          "name": "Spruce top (brighter modern alternative)",
          "descriptors": [
            "spruce-modern"
          ],
          "match_tokens": [
            "plucked",
            "choro-tradition"
          ]
        }
      ]
    },
    {
      "id": "violao_7_role",
      "name": "Functional role",
      "variants": [
        {
          "id": "violao_7_bordao_counter",
          "default": true,
          "name": "Bordão counter-melody (choro)",
          "descriptors": [
            "walking-bass",
            "countermelody",
            "choro-tradition"
          ],
          "match_tokens": [
            "plucked",
            "choro-tradition"
          ]
        },
        {
          "id": "violao_7_chord_accompaniment",
          "name": "Chord accompaniment",
          "descriptors": [
            "accompaniment"
          ],
          "match_tokens": [
            "plucked"
          ]
        }
      ]
    }
  ],
  "_ownParts": [
    {
      "id": "violao_7_string7",
      "name": "7th-string tuning",
      "variants": [
        {
          "id": "violao_7_low_C",
          "default": true,
          "name": "Low C (modern standard)",
          "descriptors": [
            "extended-bass-reach",
            "choro-bordao",
            "wood"
          ],
          "match_tokens": [
            "plucked",
            "choro-tradition",
            "bordão-counter-melody"
          ]
        },
        {
          "id": "violao_7_low_B",
          "name": "Low B (older convention)",
          "descriptors": [
            "extended-bass-reach",
            "traditional",
            "wood"
          ],
          "match_tokens": [
            "plucked",
            "choro-tradition"
          ]
        }
      ]
    },
    {
      "id": "violao_7_strings",
      "name": "String type",
      "variants": [
        {
          "id": "violao_7_nylon",
          "default": true,
          "name": "Nylon (choro canonical)",
          "descriptors": [
            "warm",
            "choro-tradition",
            "nylon-canonical"
          ],
          "match_tokens": [
            "plucked",
            "choro-tradition"
          ]
        },
        {
          "id": "violao_7_steel",
          "name": "Steel (samba-pagode)",
          "descriptors": [
            "bright",
            "piercing",
            "steel"
          ],
          "match_tokens": [
            "plucked"
          ]
        },
        {
          "id": "violao_7_gut_historical",
          "name": "Gut (pre-1950s historical choro)",
          "descriptors": [
            "gut-pre-1950s-historical-choro"
          ],
          "match_tokens": [
            "plucked",
            "choro-tradition",
            "period-performance"
          ],
          "canonical_tags": [
            "historical-gut"
          ]
        }
      ]
    },
    {
      "id": "violao_7_body_wood",
      "surface": false,
      "name": "Back / sides wood",
      "variants": [
        {
          "id": "violao_7_brazilian_rosewood",
          "default": true,
          "name": "Brazilian rosewood (pre-1992 canonical choro)",
          "descriptors": [
            "brazilian-rosewood-pre-1992-choro"
          ],
          "match_tokens": [
            "plucked",
            "choro-tradition"
          ],
          "canonical_tags": [
            "cites-app-i",
            "vintage"
          ]
        },
        {
          "id": "violao_7_indian_rosewood",
          "name": "Indian rosewood (modern alternative)",
          "descriptors": [
            "indian-rosewood"
          ],
          "match_tokens": [
            "plucked"
          ],
          "canonical_tags": [
            "cites-app-ii"
          ]
        },
        {
          "id": "violao_7_pau_ferro",
          "name": "Pau-ferro (modern CITES-friendly)",
          "descriptors": [
            "pau-ferro"
          ],
          "match_tokens": [
            "plucked"
          ]
        }
      ]
    },
    {
      "id": "violao_7_top_wood",
      "surface": false,
      "name": "Top wood",
      "variants": [
        {
          "id": "violao_7_cedar_top",
          "default": true,
          "name": "Cedar top (canonical choro warmth)",
          "descriptors": [
            "cedar-canonical-choro"
          ],
          "match_tokens": [
            "plucked",
            "choro-tradition"
          ]
        },
        {
          "id": "violao_7_spruce_top",
          "name": "Spruce top (brighter modern alternative)",
          "descriptors": [
            "spruce-modern"
          ],
          "match_tokens": [
            "plucked",
            "choro-tradition"
          ]
        }
      ]
    },
    {
      "id": "violao_7_role",
      "name": "Functional role",
      "variants": [
        {
          "id": "violao_7_bordao_counter",
          "default": true,
          "name": "Bordão counter-melody (choro)",
          "descriptors": [
            "walking-bass",
            "countermelody",
            "choro-tradition"
          ],
          "match_tokens": [
            "plucked",
            "choro-tradition"
          ]
        },
        {
          "id": "violao_7_chord_accompaniment",
          "name": "Chord accompaniment",
          "descriptors": [
            "accompaniment"
          ],
          "match_tokens": [
            "plucked"
          ]
        }
      ]
    }
  ]
}