Tuba as is the case with Berlioz). In most of Europe, the F tuba is the standard orchestral instrument, supplemented by the CC or BB only when the extra weight is desired. Wagner, for example, specifically notates the low tuba parts for "Kontrabasstuba," which are played on CC or BB tubas in most regions. In the United Kingdom, the E is the standard orchestral tuba. The euphonium is sometimes referred to as a tenor tuba and is pitched in B, one octave higher than the BB contrabass tuba. The term "tenor tuba" is often used more specifically to refer to B
Horn (instrument) was challenged by rival instrument makers during his lifetime. Throughout the mid-1850s, he continued to experiment with the instrument's valve pattern. Later makers, particularly in America, altered the scale and designs sometimes to such an extent as to make it difficult to determine whether the larger sizes of the resulting instruments actually have descended from the saxhorn or the tuba. The tenor and baritone horns, amongst other sizes of instruments used in British brass bands, are members of the saxhorn family. The Wagner tuba is a rare brass instrument that is essentially a horn modified to have a larger bell