ARMONICA

The glass harmonica, also known as glass armonica, '"hydrocrystalophone" or simply armonica (derived from "armonia", the Italian word for harmony) is a type of musical instrument that uses a series of glass bowls or goblets graduated in size to produce musical tones by means of friction, making it both a crystallophone and a friction idiophone). Despite being played with wet fingers, the sound is produced by vibration of the solid glass, so that the glass harmonica is not a hydraulophone even if played completely submerged in water.
See more at Wikipedia.org...

n. harmonica, mouth organ, small musical wind instrument played by inhaling and exhaling into a row of holes

adj. harmonic, melodious

n. mouth organ, musical instrument played with the mouth

adj. harmonic, melodious, compatible; of or relating to musical harmony

n. harmonic, overtone

N F
theory of music/harmony

ADJ
relating/according to harmony/natural proportion; in unison (Souter)

accordion
(hexagonală) = concertina
(de gură) = mouth organ