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The xylophone is the percussion instrument one kind. Puts in above the resonating tube the wooden key, strikes by the qin stick has the melody. The key arrangement way is similar to the piano keyboard. Generally refers the xylophone is the treble xylophone, the key narrower, the sound territory is higher. Has the Maring Pakistan in addition, similarly is the wooden key, but key wider, the sound territory is lower. The drum is one kind of percussion instrument, in is firm also generally the membrane which at the same time or in two-sided Mongolia tightens together for the round barrel shape drum body. The drum may use the hand or the drum pestle rap makes noise. The drum in Africa's traditional music as well as in the modern music is one kind of quite important musical instrument, some orchestras completely by are composed by the drum primarily percussion instrument. Except took the musical instrument external drum also used for in ancient times many civilizations to disseminate the information.