Xylophone

The xylophone is a musical instrument in the percussion family that consists of wooden bars struck by mallets. Each bar is an idiophone tuned to a pitch of a musical scale, whether pentatonic or heptatonic in the case of many African and Asian instruments, diatonic in many western children's instruments, or chromatic for orchestral use. The term may be used generally, to include all such instruments, such as the marimba and balafon or, more specifically, to refer to an orchestral instrument of somewhat higher pitch range than the chromatic marimba. It is sometimes mistakenly used of similar lithophones and metallophone instruments of the glockenspiel type such as the pixiphone.

History
The instrument has obscure, ancient origins. It is sometimes asserted that it was invented independently in both Africa and Asia. According to Nettl, however, it originated in southeast Asia and came to Africa c. 500 AD when a group of Malayo-Polynesian speaking peoples migrated to Africa. One piece of evidence for this is the similarity between East African xylophone orchestras and Javanese and Balinese gamelan orchestras