. . "The Euphonium is a conical-bore, baritone-voiced brass instrument that derives its name from the Greek word euphonos, meaning \"well-sounding\" or \"sweet-voiced\" (eu means \"well\" or \"good\" and phonos means \"of sound\", so \"of good sound\"). The euphonium is a valved instrument; nearly all current models are piston valved, though rotary valved models do exist. The euphonium is a non-transposing instrument known for its distinctive tone color, wide range, variety of character and agility."@en .