Euphonium Euphonium The euphonium is a large, conical-bore, baritone-voiced brass instrument that derives its name from the Ancient Greek word "euphōnos", meaning "well-sounding" or "sweet-voiced" ( "eu" means "well" or "good" and "phōnē" means "sound", hence "of good sound"). The euphonium is a valved instrument. Nearly all current models have piston valves, though models with rotary valves do exist. The euphonium may be played in bass clef as a non-transposing instrument or in treble clef as a transposing instrument. In British brass bands, it is typically treated as a treble-clef instrument, while in American band music, parts may be written in
Tenor horn Tenor horn The tenor horn (British English; alto horn in American English, Althorn in Germany; occasionally referred to as E horn) is a brass instrument in the saxhorn family, and is usually pitched in E. It has a bore that is mostly conical, like the flugelhorn and baritone horn, and normally uses a deep, cornet-like mouthpiece. It is most commonly used in British brass bands, whereas the French horn tends to take the corresponding parts in concert bands and orchestras. However, the tenor horn has occasionally been used as an alternative to the French horn in concert bands. The tenor