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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.
Johann Nepomuk Maelzel mÃ¤lzel began manufacturing ear trumpets in the. 1810s he notably produced ear trumpets For ludwig Van, beethoven who was starting to go deaf at the. Time these are now kept in The Beethoven museum In. bonn