Instruments below known at Discogs and having no direct counterpart, must be currently related as an unspecified instrument. For those which can map to existing instruments a new alias should be created, those fitting no existing instrument either should be created as new or a mapped to new instrument like "other" with additional free text attribute for these rare instruments.

For the reference, short disambiguation for most of them can be found at https://www.discogs.com/help/creditslist

12-String Acoustic Guitar
12-String Bass
5-String Banjo
6-String Banjo
6-String Bass
7-string Acoustic Guitar
7-string Electric Guitar
8-string Bass Guitar
Acoustic Piccolo Bass
Adungu
Arco Bass
Atabal
Audio Generator
Automatic Orchestra
Baby Grand Piano
Bajo Quinto
Bandola
Bandolin
Baritone Clarinet
Bass Tuba
Basso Continuo
Bellowphone
Beresta
Bolivian Flute
Border Pipes
Brass Bass
Bucium
Buhay
Byzaanchi
C Melody Saxophone
Caja Vallenata
Caramusa
Carnyx
Cello Banjo
Cetara
Chak'chas
Changi
Charamel
Chinchín
Ching-Dong
Chitarrone
Chonguri
Chuniri
Chácaras
Cigar Box Guitar
Clap Sticks
Clarion
Clarín Cajamarquino
Cobza
Comb
Computer
Concert Grand Piano
Contra-Alto Clarinet
Contrabass Trombone
Cromorne
Cultrun
Cura
Deaejeng
Dikanza
Dili Tuiduk
Doira
Dojo
Doli
Dotara
Drone
Drum Programming
Dvojačka
Ektare
Electric Harmonium
Electric Harpsichord
Electronic Drums
Electronic Valve Instrument
Epinette des Vosges
Five-String Viola
Five-String Violin
Flamenco Dance
Flugabone
Fluier
Free-reed Flute
Fretless Guitar
Friscaletto
Ghungroo
Gorosu
Gottuvâdyam
Groovebox
Guacharaca
Gudastviri
GuitarViol
Guitarra Séptima
Guitarrón
Gusle
Halldorophone
Harmet
Hayashi
Highland Pipes
Homus
Horagai
Horns
Hosho
Huapanguera
Hunting Horn
Ichigenkin
Inānga
Jaggo
Jal Tarang
Jarana
K'kwaengwari
Kabosy
Kagura Suzu
Karkabas
Kebero
Khartal
Kirar
Kobyz
Konghou
Kynggari
Lead Guitar
Lion's Roar
Liru
Lur
Lute Guitar
MIDI Controller
Mallets
Mandobass
Mandolincello
Masinko
Mey
Mizmar
Mizwad
Moceño
Mohan Veena
Monochord
Morchang
Morinhoor
Mountain Dulcimer
Murli
Mänkeri
N'vike
Naqareh
Narimono
Nigenkin
Noises
Oodaiko
Open-Back Banjo
Overtone Flute
Pandeiro
Panduri
Parlour Grand Piano
Pedalboard
Piccolo Banjo
Piccolo Bass Guitar
Piccolo Flute
Pifana
Pipe
Pirula
Pito Herreño
Pixiephone
Player Piano
Plectrum Banjo
Positive Organ
Prempensua
Psalmodicon
Quenacho
Quray
Reikin
Requinto Guitar
Resonator Banjo
Rhaita
Rhythm Guitar
Rototoms
Rozhok
Saenghwang
Salamuri
Samvadini
Sapeh
Saw
Saxello
Sazbus
Scraper
Selmer-Maccaferri Guitar
Semi-Acoustic Guitar
Semistrunnaya Gitara
Seperewa
Sequencer
Shakubyoshi
Shuitar
Singing Bowls
Siren
Skratjie
Slagbordun
Smallpipes
Sodina
Software Instrument
Soprano Cornet
Soprano Trombone
Souna
Sounds
Steirische Harmonika
Stomp Box
String Drum
Strumstick
Subcontrabass Saxophone
Suzu
Svara Mandala
Swarmandel
Sympitar
Synth
SynthAxe
Taal
Taepyungso
Tambin
Tambora
Tan-Tan
Tannerin
Tapboard
Tar (Drum)
Tar (lute)
Tarawangsa
Tarka
Temple Bells
Ti-tse
Tifa Totobuang
Tifa
Tingsha
Toubeleki
Tovshuur
Traverso
Trutruka
Tubaphone
Twelve-String Guitar
Tüngür
Valve Trumpet
Viola Braguesa
Viola Kontra
Viola Nordestina
Viola da Terra
Viola de Cocho
Violão de sete cordas
Wadaiko
Washint
Wind Chimes
Wobble Board
Yanggeum
Yokobue
Yorgaphone
Zeze
Zukra