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For other uses, see Drum (disambiguation).
The drum is a member of the percussion group of musical instruments. In the Hornbostel-Sachs classification system, it is a membranophone.<ref name=grove>{{cite book|title=The New Grove Encyclopædia of Music and Musicians|edition=2nd|first=George|last=Grove|authorlink=George Gr Chinese troops used tàigǔ drums to motivate troops, to help set a marching pace, and to call out orders or announcements. For example, during a war between Qi and Lu in 684 BC, the effect of drum on soldier's morale is employed to change the result of a major battle. Fifeyutjj