Simplify the following text for a Grade 8 native English-speaking person.
Original: In this way , it is similar to the xylophone ; however , the xylophone 's bars are made of wood , while the glockenspiel 's are metal plates or tubes , thus making it a metallophone .
Simplified: It is set up in a keyboard format , similar to the xylophone . Unlike the wooden xylophone , the glockenspiel is a metallophone .