Double bass the "old" German method sounded an octave below where notation except in the treble clef, where the music was written at pitch. The double bass is generally tuned in fourths, in contrast to other members of the orchestral string family, which are tuned in fifths (for example, the violin's four strings are, from lowest-pitched to highest-pitched: G-D-A-E). The standard tuning (lowest-pitched to highest-pitched) for bass is E–A–D–G, starting from E below second low C (concert pitch). This is the same as the standard tuning of a bass guitar and is one octave lower than the four lowest-pitched strings of standard
Violin family a relationship to the viol family. They point to the internal construction of the double bass, which includes a sound post and bass bar like other violin family instruments as a more weighty piece of evidence than the external features. Its origins aside, it has historically been used as the lowest member of the violin family. All string instruments share similar form, parts, construction and function, and the viols bear a particularly close resemblance to the violin family. However, instruments in the violin family are set apart from viols by similarities in shape, tuning practice and history. Violin family instruments