The sousaphone is a brass instrument that resembles a tuba but is designed for easy carrying and playing while marching. It features a large, circular shape and a bell that points forward, making it ideal for outdoor performances. The instrument is commonly used in marching bands and concert bands. Invented by John Philip Sousa in the late 19th century, the sousaphone is typically made of brass and has a rich, deep sound. It is played by buzzing the lips into a mouthpiece and using valves to change notes. The sousaphone's portability and distinctive tone make it a popular choice for various musical genres.