A drum set is like a team of drums that work together to make music! It is made of different kinds of drums and some other special things called 'cymbals'.
The big round part you hit is called a 'bass drum'. It makes a deep sound. Then, there are some smaller drums, like the 'snare drum', which goes 'pop' when you hit it! And there are two shiny, round things called 'cymbals' that crash and make a bright sound when you hit them.
So, when you see a drum set, it’s made of many different drums and cymbals that all make music together!