Percussion instruments are ones which are hit, shaken, struck or beaten to make a sound. This creates a shock wave which makes the air vibrate to create a noise. Percussion instruments sometimes have a distinct pitch but this is often unchangeable.
You will hear lots of different rhythms in these Minutes.
Where are these instruments being played?
Is anyone else nearby? How can you tell?
How are they making their sounds?
Describe how the vibrations were produced and then travelled to the microphone.