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brass instrument

brass instrumentbrass instrument, in music, any wind instrument—usually of brass or other metal but formerly of wood or horn—in which the vibration of the player's lips against a cup- or funnel-shaped mouthpiece causes the initial vibration of an air column.

Answer: French Horn A brass wind instrument with a conical tube that's bent into a circle, a funnel shaped mouthpiece, and a wide bell. The modern French horn has valves that allow it to play a complete chromatic scale.

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