Contrabass tuba in Bb
German: Kontrabasstuba in B
French: tuba contrebasse in si bémol
Italian: tuba contrabassa in Si bemolle
The contrabass tuba is currently made in two tunings: C and Bb. It is used primarily in opera orchestras and in brass and military bands. It is rarely asked for in symphony orchestras.
Contrabass tubas are basically made in two different forms: the tuba form and the spiral form. Spiral tubas are also known as helicons.
The sousaphone was invented by the American composer John Philip Sousa and modeled on the helicon, the first one being made in 1908. The instrument was wrapped around the shoulder for the purposes of marching and was especially well-suited to playing in the open air thanks to its tremendous volume. The tubing ranged in length from 3.6 m to 17 m. The long tubes and oversized bell were really only meant for show.
There is also a great variety of sizes, bore profiles and valve mechanisms.
The bell passes the musician’s head either on the left or the right, depending among other things on the type of valves the instrument has: Périnet valves and rotary valves are equally common.
In Austria and Germany contrabass tubas in Bb with a particularly wide bore profile are known as “Kaiser basses”.
Also: piston valve. Patented in Paris in 1838 by François Périnet as a further development of the piston valve that was first presented by Heinrich Stölzel in Berlin in 1814. Along with the rotary valve, this is the most widely used brass instrument valve today.Rotary valve
This valve was developed in Vienna by Joseph Riedl in 1835 and is now the most commonly used valve on brass instruments along with the Périnet or piston valve.
Aerophone, lip-vibrated instrument, brass wind instrument. Belongs to the valved bugle-horns family.
Brass, gold brass, nickel silver, gold lacquer.
Large cup mouthpiece
Length 540 cm, conical along entire length
Very wide, inner diameter 19–21 mm
Five valves (lowering pitch by 1, ½, 1½ steps, fourth, fifth). On instruments with six valves: 5th valve wide whole step; 6th valve wide half step.
Rim diameter 38–48 cm