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The Wagner tuba is a comparatively rare brass instrument that combines elements of both the horn...

The Wagner tuba is a comparatively rare brass instrument that combines elements of both the horn and the tuba. It was originally created for Richard Wagner's operatic cycle Der Ring des Nibelungen. Since then, other composers have written for it, most notably Anton Bruckner, in whose Symphony No. 7 a quartet of them is first heard in the slow movement in memory of Wagner. The euphonium is sometimes used as a substitute when a Wagner tuba cannot be obtained. Wagner was inspired to invent this instrument after a brief visit to Paris in 1853, when he visited the shop of Adolphe Sax, the inventor of the saxophone. Wagner wanted an instrument that could intone the Valhalla motif somberly like a trombone but with a less incisive tone like that of a horn. That effect was obtained by a conical bore (like a horn) and the use of the horn mouthpiece (tapered as opposed to a cup mouthpiece such as on a trombone). The instrument is built with rotary valves which, like those on the horn, are played with the left hand. The Wagner tuba nominally exists in two sizes, tenor in B-flat and bass in F, with ranges comparable to those of horns in the same pitches while being less adept at the highest