Sousaphone

The sousaphone is a member of the brass (Hornbostel–Sachs 423.232). Learn how it makes its sound and explore related instruments.

How the sousaphone makes its sound

In the Hornbostel–Sachs system, which classifies instruments by how they produce sound, the sousaphone belongs to the brass (lip-vibrated aerophones): the player's buzzing lips set the air column vibrating – trumpets, horns, trombones, tubas and the didgeridoo.

More broadly it is one of the aerophones (wind instruments), where sound comes from vibrating air.

Players shape its sound through technique and materials; the resonating body filters the raw vibration, boosting some harmonics and damping others.

From Wikipedia

The sousaphone is a brass musical instrument in the tuba family. It was first created around 1893 by J. W. Pepper as a modification of the helicon, at the direction of American bandleader John Philip Sousa, after whom the instrument was named. Sousa intended the bass sound of his helicons to better project above the heads of the band, and into the auditorium. Like the tuba, sound is produced by moving air past the lips, causing them to vibrate or "buzz" into a large cupped mouthpiece. Like the helicon, the modern instrument is bent in a circle to fit around the body of the musician, and ends in a large, flaring bell that is pointed forward, projecting the sound ahead of the player. Because of the ease of carrying and the direction of sound, it is widely employed in marching bands, as well as various other musical genres. Sousaphones were originally made of brass. Beginning in the mid-20th century, some sousaphones have also been made of lighter materials, such as fiberglass and plastic.