French horn


French horn

Orchestral and military brass instrument, a valved circular horn with a wide bell. It is normally a transposing instrument (its music written in a different tone than its actual sound) in F. It has a wide bore and three (sometimes four) rotary valves; its conical mouthpiece produces a mellower tone than the cup-shaped mouthpieces of other brass instruments. Horns long relied on separable crooks—circular lengths of tubing that could be attached and removed rapidly—for music modulating to new keys. Since c. 1900 the standard horn has been a “double” instrument, with built-in crooks in F and B-flat that can be selected rapidly by means of a thumb valve. The modern symphony orchestra usually includes four horns. Though difficult to play and prone to producing conspicuous errors, its tone is widely admired.

This entry comes from Encyclopædia Britannica Concise.
For the full entry on French horn, visit Britannica.com.

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