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
Victor Ewald instruments played in Bellon’s quintet and certainly in current times, by such as Canadian Brass. Photographic evidence from about 1912 shows that Ewald himself played in a brass quintet. It is seen to consist of two piston-valved cornets, rather than the modern choice of trumpets; a rotary-valved alto horn, rather than the French horn; a rotary-valved tenor horn, rather than the trombone; and a rotary-valved tuba (played by Ewald himself). Of these instruments, it is the alto and tenor horns that are most strikingly different from their modern quintet counterparts. There is no documented evidence of exactly for whom Ewald