Tuba rotary-valved tubas pitched in the same octave as euphoniums. The "Small Swiss Tuba in C" is a tenor tuba pitched in C, and provided with 6 valves to make the lower notes in the orchestral repertoire possible. The French C tuba was the standard instrument in French orchestras until overtaken by F and C tubas since the Second World War. One popular example of the use of the French C tuba is the "Bydło" movement in Ravel's orchestration of Mussorgsky's "Pictures at an Exhibition", though the rest of the work is scored for this instrument as well. Larger BBB subcontrabass
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