Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Sound Devices (hierarchy name)
5. sound devices (equipment)

Narrower term/s

• musical instruments[+]
  • membranophones [NP] [+]
    • drums (membranophones) [+]
      • friction drums [+]
      • plucked drums [+]
      • struck drums [+]
      • drum components [NP] [+]
      • drum kits
  • keyboard instruments [+]
    • clavichords [NP] [+]
      • fretted clavichords
      • unfretted clavichords
      • chekkers
    • harpsichords [NP] [+]
      • spinets
      • virginals [+]
      • clavicytheria [+]
    • Tangentenflügels [NP]
    • celestas [NP]
    • hurdy-gurdies [NP] [+]
      • organized hurdy-gurdies
      • organistrums
    • keyed monochords [NP] [+]
      • monocordes à clavier
    • pianos [NP] [+]
      • grand pianos [+]
      • player pianos
      • square pianos
      • upright pianos [+]
      • orphicas
      • prepared pianos
    • nyckelharpas [NP]
    • rhythmicons [NP]
    • keyboard instrument components [NP] [+]
      • keyboards (sound device components) [+]
      • [keyboard actions and action components] [+]
      • [swells and swell components] [+]
      • music desks (piano components)
    • harpsichord pianos [NP]
    • claviorgans [NP]
    • organs (general aerophones) [+]
      • organs (pipe organs) [NP] [+]
      • electronic organs [NP]
      • reed organs [NP] [+]
      • piano organs [NP]
  • mechanical instruments [+]
    • barrel organs (organs) [NP] [+]
      • orchestrions
      • serinettes
    • barrel pianos [NP]
    • player pianos [NP]
    • calliopes [NP]
    • orchestrions [NP]
    • music boxes [+]
      • orchestral organettes
    • carillons [NP]
  • percussion instruments [+]
    • struck drums [NP] [+]
      • rattle drums [+]
      • goblet drums [+]
      • hourglass drums [+]
      • talking drums [+]
      • tubular drums [+]
      • frame drums [+]
      • barrel drums [+]
      • ground drums
      • Uganda drums
      • double-conical drums [+]
      • bowl-shaped drums [+]
      • footed drums
      • kendhang
      • áyotls
    • percussion instrument components [NP] [+]
      • drum components [+]
      • percussion beaters [+]
    • poi (percussion instruments) [+]
      • poi āwhiowhio
      • poi kānga
      • poi ika
  • wind instruments [+]
    • organs (pipe organs) [NP] [+]
      • barrel organs (organs) [+]
      • chamber organs
      • portative organs
      • positive organs
      • regals
      • calliopes
      • hydraulises
      • Hammond organs (TM) [NP]
      • organ cases [NP]
      • swell boxes [NP]
      • organ components [NP] [+]
      • band organs
    • brass instruments [+]
      • sarrusophones [NP]
    • woodwind instruments [+]
      • flutes (aerophones) [NP] [+]
      • reedpipes (confined aerophones) [NP] [+]
      • reed instruments
  • stringed instruments (musical instruments)
  • practice instruments [+]
    • mute violins
  • combination instruments [+]
    • harpsichord pianos
    • claviorgans
    • piano organs
• blank cartridges [NP]
• sound signaling devices[+]
  • slit drums (percussion tubes) [NP] [+]
    • mokugyo
    • woodblocks (slit drums) [+]
      • temple blocks
      • merewas
    • muyu
    • teponaztlis
    • teponaztli
  • post horns [NP] [+]
    • coach horns
  • hunting horns [NP]
  • whistles [NP] [+]
    • boatswains' whistles
    • calliope whistles
    • musical whistle
  • buccinae [NP]
  • sanctus bells [NP]
  • beepers
  • buzzers
  • sirens (sound devices)
  • altar bells [NP]
  • sanctus gongs [NP]
• noisemakers
• tuning devices[+]
  • pitch pipes
  • monochords [NP] [+]
    • keyed monochords [+]
      • monocordes à clavier
  • tuning forks
• ambient sound makers[+]
  • aeolian harps
  • humming tops
  • wind chimes
• loudspeakers[+]
  • jukebox speakers
• optophones
• metronomes
• ceremonial sound devices[+]
  • bembes (double-headed drums) [NP]
  • kakakis [NP]
  • striking blocks [NP]
  • dotaku [NP]
  • atumpans [NP]
  • double gongs [NP]
  • ghantas (handbells) [NP] [+]
    • vajra-ghantas
  • gavels (ceremonial mallets) [NP]
  • ceremonial rattles [NP] [+]
    • gragers
  • gragers [NP]
• calls[+]
  • bird calls
  • deer calls