Double bass

A double bass is a really big musical instrument that can make really deep and low sounds. It's made of wood and has four strings like a guitar, but the strings are much thicker and longer. To play it, you have to stand up and hold it so that it's resting on the ground and up against your body. Then, you use a special tool called a bow or your fingers to make the strings vibrate and create music. It's often used in music like classical, jazz, and orchestra because it can make such a low and powerful sound.