Simple categories matching vocal:

• group,
• ensemble,
• selection,
• skill,
• combination,
• process,
• music,
• training,
• production,
• power,
• sound,
• form,
• melody,
• style,
• usage,
• attribute,
• composition,
• behaviour,
• use,
• arrangement,
• call,
• piece,
• utterance,
• speech,
• quality,
• behavior,
• idea,
• works,
• communication,
• work,
• signal,
• outburst,
• unit,
• expression,
• cue,
• area,
• change,
• information,
• phenomenon,
• learner,
• genre,
• harmony,
• peculiarity,
• characteristic,
• property,
• sign,
• activity,
• quartet,
• feature,
• literature,
• writing,
• ability,

Members with property vocal:

• jazz,
• chorus,
• whisper,
• nylons,
• association,
• select_choir,
• en_vogue,
• mozart_requiem,
• solo_song,
• naturalness,
• song_system,
• singing,
• power,
• couple_variation,
• trio,
• opera,
• free_imitation,
• mass,
• mixed_chorus,
• brass_choir,
• romantic_song,
• human_speech,
• vogue,
• folk_tune,
• voice_pitch,
• solo,
• quartet,
• gospel,
• psychiatric_patient,
• heartbeat,
• din,
• chorale,
• acting,
• lied,
• song,
• four_impression,
• yelp,
• opera_singing,
• golden_gate,
• voice,
• title_track,
• coaching_sport,
• control,
• cry,
• common_battery,
• fluid_speech,
• singing_sound,
• sad_tone,
• covenant_chorale,
• scratchy_scream,
• soft_rock,
• duet,
• parrot,
• loudness,
• film_music,
• motet,
• tone_signal,
• creation,
• folk,
• female_chorus,
• syllable,
• aria,
• airs,
• light_blues,
• rock_singing,
• cat_call,
• spanish_song,
• bird_song,
• popular_song,
• church_hymn,
• wind_ensemble,
• varsity_band,
• jay_american,
• tlc,
• four_ace,
• hand_gesture,
• intonation,
• real_group,
• ballad,
• ground_song,
• volume,
• electronic_music,
• sacred_cantata,
• arboreal_primates,
• advertising_song,
• yowl,
• scaffold,
• impression,
• bark,
• pitch,
• low_brass,
• cantata,
• buzz,
• rate,
• mixed_quartet,
• polyphony,
• yips,
• harmony_vocal,
• murmuring,
• growling,
• laughter,
• resonance,
• timbre_onset,
• concert_choir,
• stress,
• moan,
• range,
• oratorio,
• free_design,
• choral_singing,
• peking_opera,
• speech_rate,
• rap,
• tempo,
• canaries,
• university_chorus,
• pitch_elevation,
• dream,
• clarity,
• accent,
• inner_voice,
• dominoes,
• speech,
• shakespeare_song,
• cheek_popping,
• music_drama,
• jazz_choir,
• meow,
• movement,
• distracting_pitch,
• humming,
• squeal,
• bass,
• breath_control,
• soul,
• nsu_choir,
• four_top,
• tone,
• monteverdi_choir,
• story,
• temptation,
• voice_projection,
• lip_pop,
• blues,
• caravan,
• symphonic_choir,
• stamina,
• tonal_quality,
• grunt,
• manhattan_transfer,
• warning_call,
• lark,
• articulation,
• emotion,
• sextet,
• pied_piper,
• falsetto,
• hindustani,
• strict_imitation,
• show_choir,
• manhattan,
• genesis,
• choir,
• bloodcurdling_scream,
• intensity,
• four,
• ululation,
• diamond,
• recitative,
• male_chorus,
• call,
• rhythm,
• five_crown,
• traditional_opera,
• kissing_sound,
• agility,
• response,
• technique,
• eagle,
• tongue_click,
• high_pitch,
• world_music,
• ragtime,
• hymn_tune,
• honey_cone,
• duration,
• speed,
• harshness,
• culture,
• lion_roar,
• bird,
• ruby,
• tone_quality,
• loud_singing,
• sigh,
• scream,
• technical_prowess,
• shrieking,
• paragon,
• sensation,
• voice_quality,
• clicking_sound,
• purr,
• rock,
• infantile_voice,
• inappropriate_pitch,
• pitch_accuracy,
• pop,
• miracle,
• snap,
• mass_part,
• chapel_choir,
• sermon,
• bulgarian_folk,
• alabama,