Fill in the Blanks Percussion instrumentsOnline version Form groups of three and fill in the gaps to compete the sentences about the percussion instruments. by Laura Erra Torras 1 notes hit or into wood mallets drum stick shaken hands marimba Percussion instruments include any instrument that makes a sound when it is , scraped . When we hit these instruments we use - drums percussion or our . These instruments are made from : , brass and calfskin . Percussion instruments are most commonly divided two classes : Pitched percussion : they can produce ( like the ) . Unpitched percussion : they can NOT produce notes ( like the ) .