Guitar chord for chords having their root note on the third, fourth, fifth, and sixth strings. For a six-string guitar in standard tuning, it may be necessary to drop or omit one or more tones from the chord; this is typically the root or fifth. The layout of notes on the fretboard in standard tuning often forces guitarists to permute the tonal order of notes in a chord. The playing of conventional chords is simplified by open tunings, which are especially popular in folk, blues guitar and non-Spanish classical guitar (such as English and Russian guitar). For example, the typical twelve-bar blues
Eight-string bass guitar Eight-string bass guitar An eight-string bass guitar is a type of bass guitar with double course strings normally tuned in octaves, with both strings in a course usually played simultaneously. As on a 12-string guitar, this produces a natural chorus effect due to the subtle differences in string timbre. Such approach has been extended with the introduction of 10-, 12-, 15- or more-string bass guitars, which either double the strings of standard 5- or 6-string basses or even triple the strings of normal 4-, 5- or 6-string basses. The 8-string bass guitar was invented by electrical engineer, bass player and