The sousaphone is often called a marching tuba. It is brass instrument with valves, sometimes referred to as a wearable tuba. It was designed in the late 1800’s in such a way that it fits around the body of the wearer and so it can be easily played while being worn. Often you will see the sousaphone in a marching band. This instrument was named after John Philip Sousa, the famous march composer and conductor.