There are 3 main categories for shape. These include geometric, abstract, and natural. ( some people say natural/organic. Whichever you want to use, they are both formally correct)
Explanation:
Geometric is math. Natural is nature. Abstract is art. To complete or understand these three, you need shape
they would tie the animal skin over the wood and hit on the animal skin to create a vibration which would bounce off of the wood, creating the drum sound
