Musical Instruments

ACCORDION (-S,-IST)
AEOLIAN HARP (-S)
ALTHORN (-S)
ARMONICA (-S)
BAGPIPE (-S,-R,-RS)
BALALAIKA (-S)
BANDORA (-S)
BANDORE (-S)
BANJO (-S,-ES,-IST)
BASSOON (-S)
BOMBARDON (-S)
BOURDON (-S)
BOUSOUKI (-S,-A)
BOUZOUKI (-S,-A)
BUGLE (-S,-D,-R,-ING)
BUZUKI (-S,-A)
CALLIOPE (-S)
CAPO (-S, also -N,-NS)
CARILLON (-S,-ED,-ING,-NEUR)
CASTANET (-S)
CELESTA (-S)
CELESTE (-S)
CELLO (-S)
CELLI (O-,-ST)
CEMBALI
CEMBALO (-S)
CHEVALET (-S)
CIMBALOM (-S)
CITHARA (-S)
CITHER (-S)
CITHERN (-S)
CITHREN (-S)
CITOLA (-S)
CITTERN (-S)
CLAPPER (-S)
CLARINET (-S, *CLARINETIST & CLARINETTIST*)
CLARION (-S,-ED,-ING)
CLAVICHORD (-S,-IST)
CLAVIER (-S,-IST,-ISTIC)
CONCERTINA (-S)
CONTRABASS (-ES)
CONTRABASSOON (-S)
CORNET (-S,-IST)
CORNU (-S,-A,-AL)
CRUMHORN (-S)
CRWTH (-S)
CYMBAL (-S,-ER,-ERS,-IST)
CYMBALOM (-S)
DIDGERIDOO (-S)
DIDJERIDOO (-S)
DRUM (-S,-MER,-MERS,-MED,-MING,-LIKE)
DULCIMER (-S)
DULCIMORE (-S)
ENGLISH HORN (-S)
EUPHONIUM (-S)
FIDDLE (-S,-R,-ED,-ING, also -STICKS)
FIFE (-S,-D,-ING,-R)
FIPPLE FLUTE (-S)
FLAGEOLET (-S)
FLUEGELHORN (-S)
FLUTE (-S,-D,-R,-Y,-EY,-ING,-IST *FLUTIST & FLAUTIST*)
FORTEPIANO (-S)
FRENCH HORN (-S)
GAMBA (-S)
GITTERN (-S)
GLOCKENSPIEL (-S)
GONG (-S,-ED,-ING,-LIKE)
GUIRO (-S)
GUITAR (-S,-IST)
GUTBUCKET (-S)
HARMONICA (-S, HARMONICIST)
HARP (-S,-ER,-ERS,-IST)
HARPSICHORD (-S,-IST)
HAUTBOY (-S, HAUTBOIS)
HELICON (-S)
HORN (-S,-IST also -Y,-ED,-ING)
HORNPIPE (-S)
KALIMBA (-S)
KANTELE (-S)
KAZOO (-S)
KETTLEDRUM (-S)
KITHARA (-S)
KLAXON (-S)
KOTO (-S, also -W,-WS)
KRUMHORN (-S)
KRUMMHORN (-S)
LUTE (-S,-ED,-ING, also -A,-AL *LUTIST & LUTANIST*)
LYRE (-S, LYRIST, also -BIRD)
MANDOLA (-S)
MANDOLIN (-S,-IST)
MANDOLINE (-S)
MARACA (-S)
MARIMBA (-S, MARIMBIST)
MBIRA (-S)
MELLOPHONE (-S)
MELODEON (-S)
MELODICA (-S)
METALLOPHONE (-S)
MONOCHORD (-S)
MUSETTE (-S)
OBOE (-S,-IST also OBOES takes G-)
OCARINA (-S)
ORGAN (-S,-IST,-ISTS, also -A)
OUD (-S)
PANDORA (-S)
PANDORE (-S)
PANDURA (-S)
PANPIPE (-S)
PAVILLON (-S)
PENNYWHISTLE (-S)
PIANO (-S, PIANIST,-ISTIC,-ISTICALLY,-ISM)
PIANOFORTE (-S)
PICCOLO (-S)
PSALTERY (-IES)
PSALTRY (-IES)
REBEC (-S)
REBECK (-S)
RECORDER (-S)
ROTTE (-S, also -D,-N,-R)
SACBUT (-S)
SACKBUT (-S)
SAGBUT (-S)
SALPINX (SALPINGES)
SAMBUCA (-S)
SAMBUKE (-S)
SAMISEN (-S)
SANTIR (-S)
SANTOUR (-S)
SANTUR (-S)
SAROD (-S,-IST)
SAX (-ES)
SAXHORN (-S)
SAXOPHONE (-S,-IST)
SAXTUBA (-S)
SHAWM (-S)
SISTRA
SISTRUM (-S)
SITAR (-S,-IST)
SOPRANINO (-S)
SOUSAPHONE (-S)
SPINET (-S)
SYRINX (-ES)
TAMBOURA (-S)
TAMBOURINE (-S)
TAMBUR (-S,-A)
TAMBURA (-S)
THEORBO (-S)
THEREMIN (-S)
TIMBREL (-S,-LED)
TONETTE (-S)
TRIANGLE (-S)
TRIGON (-S)
TROMBONE (-S,-IST)
TUBA (-S,-E,-IST *TUBIST & TUBAIST*)
UKE (-S)
UKELELE (-S)
UKULELE (-S)
VIBES (VIBIST)
VIBRAHARP (-S,-IST)
VIBRAPHONE (-S,-IST)
VINA (-S)
VIOL (-S,-IST)
VIOLA (-S)
VIOLIN (-S,-IST,-ISTIC)
VIOLONCELLO (-S,-IST)
VIOLONE (-S)
VIRGINAL (-S,-IST)
WASHBOARD (-S)
XYLOPHONE (-S,-IST)
ZANZA (-S)
ZILL (-S)
ZITHER (-S,-IST)
ZITHERN (-S)

Not OCaTWL Acceptable:
AUTOHARP (trademark)
DOBRO (trademark)
HAMMOND (trademark)
MOOG (trademark)
PIANOLA (trademark)

Not OCaTWL Acceptable: 
BATA (Cuban drum)
BHAYA (drum on tabla set)
BIWA (Japanese lute)
COBZA (Romanian lute)
DAULI (Greek drum)
DHOLA (Indian barrel drum)
FUJARA (Slovakian flute)
KOBORO (Ethiopian church drum)
MURUMBU (South African pot-shaped drum)
NAKERS (Arabic kettledrum)
NAQARA (Arabic kettledrum)
PIPA, RUAN (Chinese lutes)
TSUZUMI (Japanese drum used in NOH drama)
URUA (Brazilian clarinet)
UTI (Yugoslavian lute)
ZOBO (kazoo-like toy horn)