Euphonium are the tuba-euphonium quartet or larger tuba-euphonium ensemble; the brass quintet, where it can supply the tenor voice, though the trombone is much more common in this role; and other mixed brass ensemble. Such ensembles are almost non-existent: they are more likely to be semi-professional or amateur in nature. Most of the United States Armed Forces service bands include a tuba-euphonium quartet made up of players from the band that occasionally performs in its own right. The euphonium is not traditionally an orchestral instrument and has not been common in symphony orchestras. However, there are a few works from the
Tuba Tuba The tuba (; ) is the largest and lowest-pitched musical instrument in the brass family. As with all brass instruments, the sound is produced by lip vibration into a large mouthpiece. It first appeared in the mid-19th century, making it one of the newer instruments in the modern orchestra and concert band. The tuba largely replaced the ophicleide. "Tuba" is Latin for 'trumpet'. In America, a person who plays the tuba is known as a tubaist or tubist. In the United Kingdom, a person who plays the tuba in an orchestra is known simply as a tuba player; in