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Trumpet, musical instrument, one of the brass wind instruments. The modern trumpet comprises a cylindrical tube in a curved, oblong form that flares out into a bell. Three piston valves (first introduced in 1815) regulate pitch. The trumpet is a popular dance and jazz-band instrument, as well as an orchestral instrument.

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21st Century Webster's Family Encyclopedia21st Century Webster's Family Encyclopedia - Transcendentalism to United Church of Christ