Metallophone
A metallophone is any musical instrument in which the sound-producing body is a piece of metal (other than a metal string), such as tuned metal bars, tubes, rods, bowls, or plates.  Most frequently the metal body is struck to produce sound, usually with a mallet, but may also be activated by friction, keyboard action, or other means.
Metallophones have been used in music in Asia for thousands of years. There are several different types used in Balinese and Javanese gamelan ensembles, including the gendér, gangsa and saron. These instruments have a single row of bars, tuned to the distinctive pelog or slendro scales, or a subset of them. The Western glockenspiel and vibraphone are also metallophones: they have two rows of bars, in an imitation of the piano keyboard, and are tuned to the chromatic scale.
In music of the 20th century and beyond, the word metallophone is sometimes applied specifically to a single row of metal bars suspended over a resonator box. Metallophones tuned to the diatonic scale are often used in schools; Carl Orff used diatonic metallophones in several of his pieces, including his pedagogical Schulwerk. Metallophones with microtonal tunings are used in Iannis Xenakis' Pléïades and in the music of Harry Partch.

Classification
Metallophones are a subset, made of metal, of Hornbostel-Sachs category 111.22 Percussion plaques, which is a subset of percussion idiophones.

List of metallophones
Aluphone
Bell
Bell plate
Bonang
Celesta
Chime bar
 Cowbells
Crotales
Dulcitone
Fangxiang
Gangsa
Geger
Gendèr
Glockenspiel
Gong
Hand bells
Handpan
Jegogan
Jublag
Kulintang a Tiniok/Sarunay
Mark tree
Orff metallophones
Ranat ek lek
Ranat thum lek
Rhodes piano
Roneat dek
Roneat thong
Saron
Slentem
Step bell
Steel marimbaphone
Ugal
Steel drum
Tam-tam
Toy piano
 Triangle
Tubaphone
Tubular bells
Vibraphone
Waterphone

See also
Aerophone
Lithophone
Xylophone


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