Xylophone

A xylophone is a musical instrument that makes sound when you hit the keys with sticks or mallets. It's just like a piano, but with wooden bars instead of keys. When you hit the different bars with a mallet, each bar makes a different note. Each bar is made of a different type of wood and is tuned to a particular note. The longer and wider the bar, the lower the note it produces. You can play a song by striking the different bars in the right sequence, like typing a sentence on a keyboard.