page_title: Glass harmonica
section_title: Related instruments
hierarchical_section_title: Glass harmonica / Related instruments
caption_attribution_description: English: Image of the glassharmonica, invented by Benjamin Franklin. Français&#160;: Image représentant le glassharmonica de Benjamin Franklin. Português: Imagem da armônica de Benjamin Franklin, feita de várias taças de formatos diferentes.
context_page_description: The glass harmonica, also known as the glass armonica, glass harmonium, bowl organ, hydrocrystalophone, or simply the armonica or harmonica, 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.
context_section_description: Another instrument that is also played with wet fingers is the hydraulophone. The hydraulophone sounds similar to a glass armonica but has a darker, heavier sound, that extends down into the subsonic range.  The technique for playing the hydraulophone is similar to that used for playing the armonica.
caption: An armonica
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