French horn

The horn is a brass instrument in the horn family, made of tubing wrapped into a coil with a large flared bell and rotary valves. The term French horn refers to horns with piston valves, seldom used today; the double horn in F/B♭, a variety of German horn, is the horn most often used by players in professional orchestras and bands, although the descant and triple horn have become increasingly popular. A musician who plays a horn is known as a horn player or hornist. Pitch is controlled through the combination of the following factors: speed of air through the instrument (controlled by the player's lungs and thoracic diaphragm); diameter and tension of lip aperture (by the player's lip muscles—the embouchure) in the mouthpiece; plus, in a modern horn, the operation of valves by the left hand, which route the air into extra sections of tubing.