Nine-string guitar Nine-string guitar A nine-string guitar is a guitar with nine strings instead of the commonly used six strings. Such guitars are not as common as the six-string variety, but are used by guitarists to modify the sound or expand the range of their instrument. There are two common variations of the nine string guitar: The first style is often employed with three pairs of coursed strings similar to a twelve-string guitar. Often the three wound strings are single and the three thin strings are doubled to six strings. This allows dry power chords on the lower three and a more
Acoustic bass guitar are quite rare. Like the traditional electric bass and the double bass, the acoustic bass guitar commonly has four strings, which are normally tuned E-A-D-G, an octave below the lowest four strings of the 6-string guitar. Like the electric bass guitar, models with five or more strings have been produced, although these are less common. In part, this is because the body of an acoustic bass guitar is too small to produce a resonance of acceptable volume at lower pitches on the low "B" string. One solution uses the five string acoustic bass to add an additional high string ("E-A-D-G-C")