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[[Image:Percussion_Instruments1.jpg|thumb|right|350px|A varied array of percussion instruments, including [[bell]]s, [[cymbal]]s of different sizes, various kinds of [[drum]], a [[triangle (instrument)|triangle]], octobans, and even improvised items such as a pail. (Pic: Ottmar Liebert)]]

[[Image:Percussion_Instruments1.jpg|thumb|right|350px|A varied array of percussion instruments, including [[bell]]s, [[cymbal]]s of different sizes, various kinds of [[drum]], a [[triangle (instrument)|triangle]], octobans, and even improvised items such as a pail. (Pic: Ottmar Liebert)]]

'''Percussion''' is one of the main categories of [[musical instrument]], which includes all instruments that produce a sound when struck or shaken. This encompasses a wide variety of [[drum]]s, as well as [[xylophone]]s, [[glockenspiel]]s and, technically, keyboard instruments such as the [[piano]], since the sound is produced by a [[hammer]] striking a [[string]].

'''Percussion''' is one of the main categories of [[musical instrument]], which includes all instruments that produce a sound when struck or shaken. This encompasses a wide variety of [[drum]]s, as well as ethnic percussion items such as [[cajons]], accessory items like [[triangles]], and the standard array of keyboard instruments, including [[xylophone]]s, [[glockenspiel]]s and technically, the [[piano]], since the sound is produced by a [[hammer]] striking a [[string]].

== Classification ==

== Classification ==