Natural horn
| Natural horn in the V&A Museum, London | |
| Classification | Brass instrument | 
|---|---|
| Hornbostel–Sachs classification | 423.1 | 
The natural horn is a musical instrument that is the predecessor to the modern-day (French) horn (differentiated by its lack of valves). Throughout the seventeenth and eighteenth centuries, the natural horn evolved as a separation from the trumpet by widening the bell and lengthening the tubes. It consists of a mouthpiece, long coiled tubing, and a large flared bell. This instrument was used extensively until the emergence of the valved horn in the early 19th century.