The euphonium is a tenor- and baritone-voiced valved brass instrument pitched in 9-foot B♭ an octave below the B♭ trumpet or cornet, employed chiefly in brass, military, and concert bands. As with any

The ophicleide is a family of conical-bore keyed brass instruments invented in early 19th-century France to extend the keyed bugle into the lower range. Of these, the bass ophicleide in eight-foot C o