We're having so much fun discovering how the pitch of sound changes. We discovered that a high pitch (squeaky like a mouse)  is normally made when an instrument is smaller, shorter or thinner. If the instrument is bigger, longer or thicker it normally has a low (rumble like a lorry) pitch. 

We tested drums, cow bells, guitars, xylophones, wak a tubes, cimbala, bells and cymbals! 

 

Pitch