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The coach horn was a long, straight, tapering copper horn with a slight flare, used by mail coach guards in the 18th and early 19th centuries. It was similar to a post horn but longer and was used on the London-Oxford mail coach until 1914. The post horn, a brass instrument of cylindrical bore, produced a limited range of notes, primarily harmonics. The coach horn, along with the post horn, contributed to the development of the cornet with the addition of valves.12

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  1. post horn
  2. coach horn
  3. bugle

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