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Brief description

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Double-bass
German: Kontrabass
French: Contrebasse
Italian: Contrabbasso

The double-bass is the contrabass instrument of the string section and is not strictly speaking a member of the violin family (violin, viola, cello).

The double-bass differs in several ways from the instruments of the violin family. In its modern form it is a hybrid, combining elements of both the viola da gamba and the violin families. From the gamba it retains the sloping shoulders, the generally relatively flat back and the string tunings to fourths (older instruments also retain the frets and the five to six strings). The F-shaped sound holes, the scroll, the often rounded back and the ribs with corners come from the violin. Inside the body a wide cross bar reinforces the sound post. Historically and in terms of its original construction the double-bass belongs to the gamba family, but the developments it underwent made it increasingly similar to the instruments of the violin family.

The ribs are very high in relation to the other stringed instruments, which is necessary to achieve the required resonance. They give the double-bass a rather box-like appearance, which has earned it the affectionate nickname “doghouse” among jazz musicians. The ribs become flatter toward the neck so they do not hinder access to the higher positions on the fingerboard.

For solo performance the strings are generally tuned a whole note higher to produce a brighter timbre (scordatura).

The bow is shorter and thicker than the cello bow. Horsehair is stretched between the two ends of the bow, with rosin ensuring it remains in contact with the string. Two types of bow are used: the French bow, which is similar to the cello bow but shorter and thicker. It is bowed overhand, the back of the hand facing the listener; and the German bow, slimmer, with thinner horsehair and a wider frog which is bowed underarm , the thumb facing upward.

The playing position has more to do with personal taste than the size of the instrument: some soloists play standing while others prefer to sit on a long-legged stool. The question why one should prefer to stand and the other to sit is a philosophical one (-;

Scordatura

The changing of the normal key on a stringed instrument (violin, guitar, …). The term is Italian, from discordare = to mistune).

Composers have always called for scordaturas to produce the following effects: to make fingering easier in particular keys or to alter the timbre. The most important rule for a scordatura is to tune the instrument so that the principal key of the piece to be performed contains as many open strings as possible. This ensures that the overall timbre is brighter. The fewer open strings are played the duller and darker the timbre; this effect may also be desired.

Classification
Chordophone, necked lute, stringed instrument. Contrabass instrument of the violin family (violin, viola, cello)

Head
Scroll and pegbox with tuning mechanism. 4 rear pegs

Neck
Material: maple. Fretless fingerboard made of ebony.

Body
Length: approx. 100–140 cm, box form. 115 cm usual for orchestral instruments.
Belly with F-shaped sound holes, back, ribs 23 cm high (twice as high as the cello’s).

Strings
Length of the vibrating strings: 95–115 cm, 4 strings, tuned to intervals of a fourth: E1, A1, D2, G2. Material: gut, copper, silver, aluminum, steel, steel-wound nylon.
On five-stringed instruments: B0 (C1), E1, A1, D2, G2.

Tail-pin
Steel

Total length
Approx. 180–200 cm

Bow
Length: 68–70 cm. Bow stick made of Pernambuco wood; point, adjustable frog (mother-of-pearl). Somewhat shorter and heavier than the cello bow.