{
  "id": "choir_ensemble",
  "name": "Choir / vocal ensemble",
  "family": "voice",
  "class": "vocal_choir",
  "axes": {
    "pitchFix": -2,
    "sustain": 2,
    "polyphony": 2,
    "harmonicity": 1,
    "register": 0,
    "range": 2,
    "articulation": 2,
    "transduction": -2,
    "dynamics": 2
  },
  "short": "choir",
  "parts": [
    {
      "id": "choir_size",
      "surface": false,
      "name": "Size class",
      "variants": [
        {
          "id": "chamber_choir",
          "default": true,
          "name": "Chamber (12-30)",
          "descriptors": [
            "clean-articulation-low-blur",
            "articulate",
            "classical"
          ],
          "match_tokens": [
            "chamber-fed",
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "symphonic_chorus",
          "name": "Symphonic (60-120)",
          "descriptors": [
            "massive",
            "orchestral",
            "grand"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "gospel_choir",
          "name": "Gospel choir",
          "descriptors": [
            "ecstatic",
            "swung",
            "foundational"
          ],
          "match_tokens": [
            "gospel-rooted",
            "choir-blendable"
          ]
        },
        {
          "id": "mens_chorus",
          "name": "Male chorus",
          "descriptors": [
            "chest-resonance-low-mid",
            "harmonically-rich-sustained",
            "foundational"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "womens_chorus",
          "name": "Female chorus",
          "descriptors": [
            "ringing",
            "soaring"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "mixed_4_part_satb",
          "name": "Mixed SATB (canonical 4-part Western)",
          "descriptors": [
            "mixed-satb-canonical-4-part-western"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "a_cappella_small_ensemble_3_8",
          "name": "A cappella small ensemble (3-8 voices, one per part)",
          "descriptors": [
            "a-cappella-small-3-to-8-one-per-part"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        }
      ]
    },
    {
      "id": "choir_polyphonic_configuration",
      "surface": false,
      "name": "Polyphonic configuration (texture-type)",
      "variants": [
        {
          "id": "choir_polyphony_homophonic_chordal",
          "default": true,
          "name": "Homophonic chordal (all voices rhythm-aligned)",
          "descriptors": [
            "homophonic-chordal-rhythm-aligned"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_polyphony_imitative_counterpoint",
          "name": "Imitative counterpoint (fugal entries)",
          "descriptors": [
            "imitative-counterpoint-fugal-entries"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_polyphony_three_voice_polyphonic",
          "name": "Three-voice polyphonic (regional-canonical configurations)",
          "descriptors": [
            "three-voice-polyphonic-regional-canonical"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_polyphony_four_voice_polyphonic",
          "name": "Four-voice polyphonic (regional-canonical configurations)",
          "descriptors": [
            "four-voice-polyphonic-regional-canonical"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_polyphony_five_voice_polyphonic",
          "name": "Five-voice polyphonic (regional-canonical configurations)",
          "descriptors": [
            "five-voice-polyphonic-regional-canonical"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_polyphony_heterophonic",
          "name": "Heterophonic (same melody, voice-by-voice variant ornamentation)",
          "descriptors": [
            "heterophonic-same-melody-variant-ornament-per-voice"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_polyphony_hocket_distribution",
          "name": "Hocket interlocked single-note distribution across voices",
          "descriptors": [
            "hocket-interlocked-single-note-distribution"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_polyphony_dense_cluster",
          "name": "Dense cluster polyphony (deliberate semitone/sub-semitone clusters)",
          "descriptors": [
            "dense-cluster-deliberate-second-seventh-ninth"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_polyphony_polyrhythmic_layered",
          "name": "Polyrhythmic vocal layering (independent cycles per voice)",
          "descriptors": [
            "polyrhythmic-vocal-layering-independent-cycles"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_polyphony_antiphonal_double_choir",
          "name": "Antiphonal double-choir (alternating ensembles)",
          "descriptors": [
            "antiphonal-double-choir-alternating"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble",
            "call-response"
          ]
        },
        {
          "id": "choir_polyphony_call_response_leader_group",
          "name": "Call-and-response (single-leader + group-response)",
          "descriptors": [
            "call-response-single-leader-group-response"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble",
            "call-response"
          ]
        },
        {
          "id": "choir_polyphony_drone_plus_voices",
          "name": "Drone-plus-voices (sustained-pedal voices under melodic line)",
          "descriptors": [
            "drone-plus-voices-sustained-pedal-under-melody"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble",
            "drone-foundation"
          ]
        },
        {
          "id": "choir_polyphony_organum_4_5_8",
          "name": "Organum parallel fourth-fifth-octave",
          "descriptors": [
            "parallel-fourth-fifth-octave-organum"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble",
            "sacred-traditional"
          ]
        }
      ]
    },
    {
      "id": "choir_regional_canonical_configuration",
      "surface": false,
      "name": "Regional canonical configuration",
      "variants": [
        {
          "id": "choir_regional_none",
          "default": true,
          "name": "No specific regional configuration",
          "descriptors": [],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_regional_kakhetian_three_voice",
          "name": "Kakhetian three-voice (two soloists + choral drone — Caucasian polyphonic)",
          "descriptors": [
            "kakhetian-three-voice-two-soloists-choral-drone"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_regional_gurian_three_voice_krimanchuli",
          "name": "Gurian three-voice with krimanchuli (mtkmeli + modzakhili + bani + M2-yodel upper)",
          "descriptors": [
            "gurian-three-voice-mtkmeli-modzakhili-bani-krimanchuli"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_regional_svanetian_complex_three_voice",
          "name": "Svanetian complex three-voice (Caucasian highland polyphonic)",
          "descriptors": [
            "svanetian-complex-three-voice-highland-polyphonic"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_regional_paghjella_corsican",
          "name": "Paghjella Corsican three-voice (secondu + bassu + terzu)",
          "descriptors": [
            "paghjella-corsican-secondu-bassu-terzu"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ],
          "canonical_tags": [
            "corsican"
          ]
        },
        {
          "id": "choir_regional_bulgarian_diaphonic",
          "name": "Bulgarian women three-voice diaphonic (open-throat high-pressure parallel-cluster)",
          "descriptors": [
            "bulgarian-women-three-voice-diaphonic-cluster"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ],
          "canonical_tags": [
            "bulgarian"
          ]
        },
        {
          "id": "choir_regional_aka_four_part",
          "name": "Aka four-part polyphony (motangole + ngue-wa-lembo + osese + diyei M1-M2-yodel)",
          "descriptors": [
            "aka-four-part-motangole-ngue-osese-diyei"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ],
          "canonical_tags": [
            "aka-baka-polyphony"
          ]
        },
        {
          "id": "choir_regional_sardinian_cantu_a_tenore",
          "name": "Sardinian cantu a tenore four-voice (oche + mesu-oche + contra-buzzing-fifth + bassu-ventricular-subharmonic)",
          "descriptors": [
            "sardinian-cantu-a-tenore-oche-mesu-contra-bassu"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ],
          "canonical_tags": [
            "sardinian"
          ]
        },
        {
          "id": "choir_regional_gallura_five_voice",
          "name": "Sardinian Gallura five-voice (tripli octave-doubled — distinct from cantu a tenore)",
          "descriptors": [
            "gallura-five-voice-tripli-octave-doubled"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ],
          "canonical_tags": [
            "sardinian"
          ]
        },
        {
          "id": "choir_regional_mbenga_mbuti_three_voice_ostinato",
          "name": "Mbenga-Mbuti three-voice ostinato (forager-polyphonic with hocket and yodel)",
          "descriptors": [
            "mbenga-mbuti-three-voice-ostinato-hocket-yodel"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_regional_albanian_iso_polyphony",
          "name": "Albanian iso-polyphony (drone-marrës-prerës with sustained iso)",
          "descriptors": [
            "albanian-iso-polyphony-marres-preres-iso"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble",
            "drone-foundation"
          ]
        },
        {
          "id": "choir_regional_andean_three_voice_parallel_thirds",
          "name": "Andean three-voice parallel-thirds (Quechua-Aymara)",
          "descriptors": [
            "andean-three-voice-parallel-thirds-quechua-aymara"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_regional_polynesian_himene_tarava",
          "name": "Polynesian himene-tarava parallel-thirds (Tahitian congregational polyphonic)",
          "descriptors": [
            "polynesian-himene-tarava-parallel-thirds-congregational"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ],
          "canonical_tags": [
            "polynesian-himene-tarava"
          ]
        },
        {
          "id": "choir_regional_sub_saharan_call_response_ostinato",
          "name": "Sub-Saharan call-response ostinato (single-leader + group-response with polyrhythmic-layered cycles)",
          "descriptors": [
            "sub-saharan-call-response-ostinato-polyrhythmic"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble",
            "call-response"
          ]
        },
        {
          "id": "choir_regional_rioplatense_murga",
          "name": "Rioplatense murga block-chorus (Montevideo tablado cuplé belting)",
          "descriptors": [
            "murga-tablado-cuple-belt",
            "murga-carnaval-coro-block"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ],
          "canonical_tags": [
            "murga"
          ]
        }
      ]
    },
    {
      "id": "choir_ensemble_repertoire",
      "surface": false,
      "name": "Repertoire / period",
      "variants": [
        {
          "id": "choir_ensemble_renaissance",
          "default": true,
          "name": "Renaissance polyphony",
          "descriptors": [
            "sacred-Latin",
            "historical"
          ],
          "match_tokens": [
            "renaissance",
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_ensemble_romantic",
          "name": "Romantic / oratorio",
          "descriptors": [
            "nineteenth-century",
            "orchestral-paired",
            "large-form"
          ],
          "match_tokens": [
            "romantic",
            "romantic-orchestra",
            "choir-blendable"
          ]
        },
        {
          "id": "choir_ensemble_contemporary",
          "name": "Contemporary / modern",
          "descriptors": [
            "twenty-first-century",
            "experimental",
            "cross-genre"
          ],
          "match_tokens": [
            "contemporary",
            "contemporary-classical",
            "choir-blendable"
          ]
        },
        {
          "id": "choir_ensemble_global_traditional",
          "name": "Global traditional polyphonic (Caucasian / Sardinian / Aka / Bulgarian / Corsican etc.)",
          "descriptors": [
            "global-traditional-polyphonic-canonical"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble",
            "folk-tradition"
          ]
        },
        {
          "id": "choir_ensemble_sacred_global",
          "name": "Sacred liturgical global (Gregorian / Byzantine / Coptic / Maronite / Znamenny)",
          "descriptors": [
            "sacred-liturgical-global"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble",
            "sacred-traditional",
            "devotional"
          ]
        }
      ]
    }
  ],
  "_ownParts": [
    {
      "id": "choir_size",
      "surface": false,
      "name": "Size class",
      "variants": [
        {
          "id": "chamber_choir",
          "default": true,
          "name": "Chamber (12-30)",
          "descriptors": [
            "clean-articulation-low-blur",
            "articulate",
            "classical"
          ],
          "match_tokens": [
            "chamber-fed",
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "symphonic_chorus",
          "name": "Symphonic (60-120)",
          "descriptors": [
            "massive",
            "orchestral",
            "grand"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "gospel_choir",
          "name": "Gospel choir",
          "descriptors": [
            "ecstatic",
            "swung",
            "foundational"
          ],
          "match_tokens": [
            "gospel-rooted",
            "choir-blendable"
          ]
        },
        {
          "id": "mens_chorus",
          "name": "Male chorus",
          "descriptors": [
            "chest-resonance-low-mid",
            "harmonically-rich-sustained",
            "foundational"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "womens_chorus",
          "name": "Female chorus",
          "descriptors": [
            "ringing",
            "soaring"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "mixed_4_part_satb",
          "name": "Mixed SATB (canonical 4-part Western)",
          "descriptors": [
            "mixed-satb-canonical-4-part-western"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "a_cappella_small_ensemble_3_8",
          "name": "A cappella small ensemble (3-8 voices, one per part)",
          "descriptors": [
            "a-cappella-small-3-to-8-one-per-part"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        }
      ]
    },
    {
      "id": "choir_polyphonic_configuration",
      "surface": false,
      "name": "Polyphonic configuration (texture-type)",
      "variants": [
        {
          "id": "choir_polyphony_homophonic_chordal",
          "default": true,
          "name": "Homophonic chordal (all voices rhythm-aligned)",
          "descriptors": [
            "homophonic-chordal-rhythm-aligned"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_polyphony_imitative_counterpoint",
          "name": "Imitative counterpoint (fugal entries)",
          "descriptors": [
            "imitative-counterpoint-fugal-entries"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_polyphony_three_voice_polyphonic",
          "name": "Three-voice polyphonic (regional-canonical configurations)",
          "descriptors": [
            "three-voice-polyphonic-regional-canonical"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_polyphony_four_voice_polyphonic",
          "name": "Four-voice polyphonic (regional-canonical configurations)",
          "descriptors": [
            "four-voice-polyphonic-regional-canonical"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_polyphony_five_voice_polyphonic",
          "name": "Five-voice polyphonic (regional-canonical configurations)",
          "descriptors": [
            "five-voice-polyphonic-regional-canonical"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_polyphony_heterophonic",
          "name": "Heterophonic (same melody, voice-by-voice variant ornamentation)",
          "descriptors": [
            "heterophonic-same-melody-variant-ornament-per-voice"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_polyphony_hocket_distribution",
          "name": "Hocket interlocked single-note distribution across voices",
          "descriptors": [
            "hocket-interlocked-single-note-distribution"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_polyphony_dense_cluster",
          "name": "Dense cluster polyphony (deliberate semitone/sub-semitone clusters)",
          "descriptors": [
            "dense-cluster-deliberate-second-seventh-ninth"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_polyphony_polyrhythmic_layered",
          "name": "Polyrhythmic vocal layering (independent cycles per voice)",
          "descriptors": [
            "polyrhythmic-vocal-layering-independent-cycles"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_polyphony_antiphonal_double_choir",
          "name": "Antiphonal double-choir (alternating ensembles)",
          "descriptors": [
            "antiphonal-double-choir-alternating"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble",
            "call-response"
          ]
        },
        {
          "id": "choir_polyphony_call_response_leader_group",
          "name": "Call-and-response (single-leader + group-response)",
          "descriptors": [
            "call-response-single-leader-group-response"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble",
            "call-response"
          ]
        },
        {
          "id": "choir_polyphony_drone_plus_voices",
          "name": "Drone-plus-voices (sustained-pedal voices under melodic line)",
          "descriptors": [
            "drone-plus-voices-sustained-pedal-under-melody"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble",
            "drone-foundation"
          ]
        },
        {
          "id": "choir_polyphony_organum_4_5_8",
          "name": "Organum parallel fourth-fifth-octave",
          "descriptors": [
            "parallel-fourth-fifth-octave-organum"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble",
            "sacred-traditional"
          ]
        }
      ]
    },
    {
      "id": "choir_regional_canonical_configuration",
      "surface": false,
      "name": "Regional canonical configuration",
      "variants": [
        {
          "id": "choir_regional_none",
          "default": true,
          "name": "No specific regional configuration",
          "descriptors": [],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_regional_kakhetian_three_voice",
          "name": "Kakhetian three-voice (two soloists + choral drone — Caucasian polyphonic)",
          "descriptors": [
            "kakhetian-three-voice-two-soloists-choral-drone"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_regional_gurian_three_voice_krimanchuli",
          "name": "Gurian three-voice with krimanchuli (mtkmeli + modzakhili + bani + M2-yodel upper)",
          "descriptors": [
            "gurian-three-voice-mtkmeli-modzakhili-bani-krimanchuli"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_regional_svanetian_complex_three_voice",
          "name": "Svanetian complex three-voice (Caucasian highland polyphonic)",
          "descriptors": [
            "svanetian-complex-three-voice-highland-polyphonic"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_regional_paghjella_corsican",
          "name": "Paghjella Corsican three-voice (secondu + bassu + terzu)",
          "descriptors": [
            "paghjella-corsican-secondu-bassu-terzu"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ],
          "canonical_tags": [
            "corsican"
          ]
        },
        {
          "id": "choir_regional_bulgarian_diaphonic",
          "name": "Bulgarian women three-voice diaphonic (open-throat high-pressure parallel-cluster)",
          "descriptors": [
            "bulgarian-women-three-voice-diaphonic-cluster"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ],
          "canonical_tags": [
            "bulgarian"
          ]
        },
        {
          "id": "choir_regional_aka_four_part",
          "name": "Aka four-part polyphony (motangole + ngue-wa-lembo + osese + diyei M1-M2-yodel)",
          "descriptors": [
            "aka-four-part-motangole-ngue-osese-diyei"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ],
          "canonical_tags": [
            "aka-baka-polyphony"
          ]
        },
        {
          "id": "choir_regional_sardinian_cantu_a_tenore",
          "name": "Sardinian cantu a tenore four-voice (oche + mesu-oche + contra-buzzing-fifth + bassu-ventricular-subharmonic)",
          "descriptors": [
            "sardinian-cantu-a-tenore-oche-mesu-contra-bassu"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ],
          "canonical_tags": [
            "sardinian"
          ]
        },
        {
          "id": "choir_regional_gallura_five_voice",
          "name": "Sardinian Gallura five-voice (tripli octave-doubled — distinct from cantu a tenore)",
          "descriptors": [
            "gallura-five-voice-tripli-octave-doubled"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ],
          "canonical_tags": [
            "sardinian"
          ]
        },
        {
          "id": "choir_regional_mbenga_mbuti_three_voice_ostinato",
          "name": "Mbenga-Mbuti three-voice ostinato (forager-polyphonic with hocket and yodel)",
          "descriptors": [
            "mbenga-mbuti-three-voice-ostinato-hocket-yodel"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_regional_albanian_iso_polyphony",
          "name": "Albanian iso-polyphony (drone-marrës-prerës with sustained iso)",
          "descriptors": [
            "albanian-iso-polyphony-marres-preres-iso"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble",
            "drone-foundation"
          ]
        },
        {
          "id": "choir_regional_andean_three_voice_parallel_thirds",
          "name": "Andean three-voice parallel-thirds (Quechua-Aymara)",
          "descriptors": [
            "andean-three-voice-parallel-thirds-quechua-aymara"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_regional_polynesian_himene_tarava",
          "name": "Polynesian himene-tarava parallel-thirds (Tahitian congregational polyphonic)",
          "descriptors": [
            "polynesian-himene-tarava-parallel-thirds-congregational"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ],
          "canonical_tags": [
            "polynesian-himene-tarava"
          ]
        },
        {
          "id": "choir_regional_sub_saharan_call_response_ostinato",
          "name": "Sub-Saharan call-response ostinato (single-leader + group-response with polyrhythmic-layered cycles)",
          "descriptors": [
            "sub-saharan-call-response-ostinato-polyrhythmic"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble",
            "call-response"
          ]
        },
        {
          "id": "choir_regional_rioplatense_murga",
          "name": "Rioplatense murga block-chorus (Montevideo tablado cuplé belting)",
          "descriptors": [
            "murga-tablado-cuple-belt",
            "murga-carnaval-coro-block"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble"
          ],
          "canonical_tags": [
            "murga"
          ]
        }
      ]
    },
    {
      "id": "choir_ensemble_repertoire",
      "surface": false,
      "name": "Repertoire / period",
      "variants": [
        {
          "id": "choir_ensemble_renaissance",
          "default": true,
          "name": "Renaissance polyphony",
          "descriptors": [
            "sacred-Latin",
            "historical"
          ],
          "match_tokens": [
            "renaissance",
            "choir-blendable",
            "ensemble"
          ]
        },
        {
          "id": "choir_ensemble_romantic",
          "name": "Romantic / oratorio",
          "descriptors": [
            "nineteenth-century",
            "orchestral-paired",
            "large-form"
          ],
          "match_tokens": [
            "romantic",
            "romantic-orchestra",
            "choir-blendable"
          ]
        },
        {
          "id": "choir_ensemble_contemporary",
          "name": "Contemporary / modern",
          "descriptors": [
            "twenty-first-century",
            "experimental",
            "cross-genre"
          ],
          "match_tokens": [
            "contemporary",
            "contemporary-classical",
            "choir-blendable"
          ]
        },
        {
          "id": "choir_ensemble_global_traditional",
          "name": "Global traditional polyphonic (Caucasian / Sardinian / Aka / Bulgarian / Corsican etc.)",
          "descriptors": [
            "global-traditional-polyphonic-canonical"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble",
            "folk-tradition"
          ]
        },
        {
          "id": "choir_ensemble_sacred_global",
          "name": "Sacred liturgical global (Gregorian / Byzantine / Coptic / Maronite / Znamenny)",
          "descriptors": [
            "sacred-liturgical-global"
          ],
          "match_tokens": [
            "choir-blendable",
            "ensemble",
            "sacred-traditional",
            "devotional"
          ]
        }
      ]
    }
  ]
}