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
Helicon (instrument) military marching bands. The German manufacturer Melton developed these instruments using the acoustical proportions of the "Červený Imperial BB Contrabass Helicon": Helicon (instrument) The helicon is a brass musical instrument in the tuba family. Most are B basses, but they also commonly exist in E, F, and tenor sizes, as well as other types to a lesser extent. The sousaphone is a specialized version of the helicon. The first sousaphone, a non-production prototype made by J. W. Pepper & Son, Inc., had an upright bell, hence the nickname "rain catcher" because of its shape. Later production versions differ primarily in