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
Subcontrabass tuba Subcontrabass tuba The subcontrabass tuba is an extension of the tuba family within the modern contrabass tuba. At least five known examples have been created, all pitched in BBBb, sounding a full octave lower than standard BBb contrabass tubas. Music for them is written in bass clef sounding a full octave lower than notated. The first existence of an instrument of this sort was designed by the Parisian instrument innovator Adolphe Sax (1814–1894), the inventor of the saxophone, who dubbed it the subcontrabass saxhorn. These instruments were all very rare and never received a great deal of attention. The first