Contrabass guitar

Contrabass guitar
String instrument
Other names	Octave guitar
Classification	String instrument (fingered or picked; strummed)
Hornbostel–Sachs classification	321.322; (Composite chordophone)
Related instruments
	Electric guitar; Double bass; Acoustic bass guitar; Ukulele bass;

A contrabass guitar is a low-register bass guitar with four, five or six strings. It is often called, simply, a six string bass guitar. The five string bass guitar is rarely called a contrabass guitar, even though it typically has the same lowest note.