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The Wagner tuba is a narrow-bore tuba with a French-horn mouthpiece. Tubas appeared first in Berlin in the 1820s, soon after the invention of the valve. They were soon accepted into the band and orchestra, displacing the serpent, ophicleide, and other such instruments of poorer tone quality and intonation.
The Tuba. Wilhelm Friedrich Wieprecht made some of the greatest advancements for bass sounds and instruments and patented the basstuba in 1835 with Carl Moritz. Wieprecht studied acoustics in an effort to correct the deficiencies of military instruments and music.