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Matches in DBpedia 2014 for { ?s ?p The horn, also known as the French horn, is a brass instrument made of tubing more than 20 feet (6.1 m) long, wrapped into a coil with a flared bell. The main tubing on an F Horn is ~12–13' long and that associated with the valves adds additional length to achieve ~20' of tubing overall. A musician who plays the horn is called a horn player (or less frequently, a hornist). In informal use, "horn" may also refer to nearly any wind instrument with a flared exit for the sound.Descended from the natural horn, the instrument is often informally known as the French horn. However, this is technically incorrect since the instrument is not French in origin, but German. Therefore, the International Horn Society has recommended since 1971 that the instrument be simply called the horn. French horn is still the most commonly used name for the instrument in the United States. Pitch is controlled through the adjustment of lip tension in the mouthpiece and the operation of valves by the left hand, which route the air into extra tubing. Most horns have lever-operated rotary valves, but some, especially older horns, use piston valves (similar to a trumpet's) and the Vienna horn uses double-piston valves, or pumpenvalves. The backward facing orientation of the bell relates to the perceived desirability to create a subdued sound, in concert situations, in contrast to the more-piercing quality of the trumpet. A horn without valves is known as a natural horn, changing pitch along the natural harmonics of the instrument (similar to a bugle). Pitch may also be controlled by the position of the hand in the bell since the hand is acoustically beneficial to the horn because it shortens the diameter of the bell. The pitch of any note can easily be raised or lowered based on the hand position in the bell.Three valves control the flow of air in the single horn, which is tuned to F or less commonly B♭. The more common double horn has a fourth valve, usually operated by the thumb, which routes the air to one set of tubing tuned to F or another tuned to B♭. Triple horns with five valves are also made, tuned in F, B♭, and a descant E♭ or F. Also common are descant doubles, which typically provide B♭ and Alto F branches. This configuration provides a high-range horn while avoiding the additional complexity and weight of a triple.A crucial element in playing the horn deals with the mouthpiece. Most of the time, the mouthpiece is placed in the exact center of the lips, but, because of differences in the formation of the lips and teeth of different players, some tend to play with the mouthpiece slightly off center. Although the exact side-to-side placement of the mouthpiece varies for most horn players, the up-and-down placement of the mouthpiece is generally two-thirds on the upper lip and one-third on the lower lip. Usually, in order to play higher octave notes, the pressure exerted on the lips from the mouthpiece is increased. But, although some pressure is needed, excessive pressure is not desirable. Playing with excessive pressure makes the playing of the horn sound forced and harsh as well as decreases endurance of the player by about half.. }

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