Simple categories matching instrumental:

• investigation,
• guitarist,
• product,
• group,
• track,
• music,
• works,
• play,
• song,
• action,
• quality,
• ensemble,
• assembly,
• characteristic,
• genre,
• piece,
• grouping,
• form,
• composition,
• entity,
• trait,
• sound,
• part,
• hardware,
• section,
• voice,
• style,
• selection,
• analysis,
• masterpiece,
• passage,
• accompaniment,
• activity,
• combination,
• timbre,
• test,
• force,
• effect,
• artifact,

Members with property instrumental:

• ken_snyder,
• aggressiveness,
• transportation_cooking,
• sonata,
• first_violin,
• job,
• latin,
• metal,
• household_work,
• title_track,
• symphony,
• steel-drum_band,
• orchestra,
• venture,
• piano,
• trio,
• prudence,
• waltz,
• bach_music,
• rondo_form,
• auditor_competence,
• brass_ensemble,
• competitiveness,
• school_work,
• bell,
• violin_group,
• violin_play,
• duet,
• solo_sonata,
• violin,
• financial_management,
• fantasia,
• concerto,
• brass,
• housework,
• educational_group,
• mandolin_club,
• erin_shore,
• job_search,
• further_genre,
• tango,
• deluxe_fabric,
• rock,
• cooking,
• brass_quartet,
• agriculture,
• wind_ensemble,
• skill_utilization,
• knowledge_building,
• rush,
• airs,
• string_program,
• umbrella,
• concert-band_music,
• trio_sonata,
• prior_art,
• concert,
• show_band,
• techno,
• electronic_fill,
• space_flight,
• jazz_combo,
• strength,
• cello,
• gospel,
• employment,
• classical_piece,
• flute_section,
• washing,
• gong,
• cathedral_choir,
• track,
• social_contribution,
• adagio_movement,
• icebreaker,
• political_action,
• autonomy,
• flute_choir,
• motive,
• horn,
• eye_test,
• quintet,
• pitch,
• nebulizer,
• suite,
• sax_quartet,
• choir,
• ensemble_bash,
• rock_song,
• piano_variation,
• usability,
• brass-band_composition,
• bass,
• tallis_fantasia,
• transportation,
• deployment,
• spray_chamber,
• clarinet_quartet,
• assertiveness,
• organizational_innovation,
• hi_signature,
• percussion_ensemble,
• film_scores,
• solo_performance,
• overture,
• folk,
• social_activity,
• percussion,
• hymn,
• woodwind_trio,
• wind_band,
• competence,
• church,
• music,
• big_band,
• cleaning,
• brass_sound,
• bass-guitar_sound,
• largo,
• flute,
• keyboard_music,
• leadership,
• linearity_test,
• guitar_ensemble,
• flute_ensemble,
• varsity_band,
• pep_band,
• pendulum,
• gamelan,
• allegro,
• heavy_housework,
• machine,
• scattered_light,
• banjo_club,
• meal_preparation,
• health_education,
• school_orchestra,
• brass_quintet,
• power,
• usefulness,
• decisiveness,
• pipeline,
• drum,
• fugue,
• research,
• skin,
• ragtime,
• woodwind_quintet,
• approach,
• prevention,
• search_process,
• court_band,
• tool,
• symphony_music,
• low_brass,
• goldberg_variation,
• quartet,
• jazz,
• under_bridge,
• large_band,
• confidence,
• stage_band,
• melody,
• household_task,
• avoidance,
• lawn_care,
• organ_concerto,
• rod_hardware,
• harmony_trail,
• sextet,
• synthesiser_sound,
• percussion_group,
• rhythm_part,
• scale,
• sleepy_head,
• sound_affairs,
• escape,
• chamber_ensemble,
• augmentation,
• trombone_quartet,
• beethoven,
• reverberation,
• mass_spectrometry,
• piano_part,
• elegant_seduction,
• canon,
• bridge,
• hurricane_red,
• string_ensemble,
• house,
• guitar_sound,
• solo_study,
• productivity,
• dance,
• mazurka,
• school_band,
• shade,
• withdrawal,
• pop,
• fizzy_pop,
• personal_business,
• main_orchestra,
• upright_bass,
• motet,
• saxophone_quartet,
• chore,
• plasma_torch,
• medley,
• organs,
• teaching,
• variation,
• pert_chart,
• central_idea,
• water_music,
• violin_concerto,
• diminution,
• drum_set,
• university_chorus,
• mozart,
• jazz_orchestra,
• jazz_bank,
• brass_group,
• dominance,
• brass_choir,
• compass,
• fresh_boss,
• toledo_symphony,
• combination,
• fireball,
• second_sonata,
• efficiency,
• smith_quartet,
• drum_sound,
• job_acquisition,
• amplitude,
• nsu_choir,
• bach_toccata,
• toccata,
• woodwind_group,
• opera,
• ballet,
• military_band,
• brass_trio,
• synthesizer_sound,
• medication_management,
• blues,
• coordination,
• explosion,
• battle_music,
• jazz_ensemble,
• light,
• flexibility,
• band,
• classical_music,
• prelude,
• fishing_reel,
• hunting,
• shopping,
• woodwind_ensemble,
• strong_independence,
• commitment,
• initiative,
• determination,
• guitar,
• housekeeping,
• university_orchestra,
• toy_piano,
• job_finding,
• wind_quintet,
• piano_sound,
• independence,
• liverpool_hornpipe,
• mass,
• symphonic_music,