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
Jazz band earlier periods of jazz, a bass saxophone was used as a bass line instrument, though this is far less common today. The trombone section consists of three tenor trombones and one bass trombone. The trumpet section consists of four trumpets, though some compositions and arrangements call for five trumpets. A trumpet player may sometimes double on a flugelhorn. The tuba is the largest and lowest-pitched brass instrument. This instrument made its first appearance in the 19th century, being played at orchestras. When involved with jazz, most tubas are played outdoors. Tuba players are generally called "Jazz tubists." Jazz violin is