TENOR HORN

also called Althorn, or Alto Horn, brass wind instrument derived from the cornet and the valved bugle, or flgelhorn. A saxhorn of tenor range and a tenor bugle are also sometimes called tenor horns. The tenor horn was used in Prussian cavalry bands by 1829. It has three valves, a cup mouthpiece, and a narrow bore and medium bell. Though usually pitched in B-flat, it is also built in A and C.