While the six string guitar has been more or less the standard instrument since the mid-19th century, guitarists and luthiers have experimented with additional strings to extend the range of the instrument practically since the emergence of the modern guitar form, sometime in the 15th century. Seven, eight, nine, ten and more strings have been used by guitarists seeking to increase the range of pitches available from the instrument. Some of these guitars are ethnic instruments, specific to different cultures such as Russian and Brazilian guitars. During the 90's the seven-string guitar became popular among metal bands such who used the additional string for extra low end. Extended range classical guitars (especially 8- and 10-string instruments) are being seen more frequently and have found favor with guitarists who play Renaissance and Baroque lute music, as well as those who wish to transcribe piano and orchestral works for the guitar.
There are some classical players of the seven-string guitar who also use an extended treble range by adding more frets at the high end (similar to some Viennese guitars of the 19th century.)
This is a list of guitarists who have made notable usage of extended-range guitars or have played a specifically notable instrument. This list does not include multi-neck guitarists or harp guitarists.
The guitar is a stringed musical instrument, that is usually fretted and typically has six or twelve strings. It is usually held flat against the player's body and played by strumming or plucking the strings with the dominant hand, while simultaneously pressing selected strings against frets with the fingers of the opposite hand. A guitar pick may also be used to strike the strings. The sound of the guitar is projected either acoustically, by means of a resonant hollow chamber on the guitar, or amplified by an electronic pickup and an amplifier.
Ibanez is a Japanese guitar brand owned by Hoshino Gakki. Based in Nagoya, Aichi, Japan, Hoshino Gakki were one of the first Japanese musical instrument companies to gain a significant foothold in import guitar sales in the United States and Europe, as well as the first brand of guitars to mass-produce the seven-string guitar and eight-string guitar. Ibanez manufactures effects, accessories, amps, and instruments in Japan, China, Indonesia, and the United States. As of 2017 they marketed nearly 165 models of bass guitar, 130 acoustic guitars, and more than 300 electric guitars. After Gibson and Fender, Ibanez is considered the third biggest guitar brand.
The fingerboard is an important component of most stringed instruments. It is a thin, long strip of material, usually wood, that is laminated to the front of the neck of an instrument. The strings run over the fingerboard, between the nut and bridge. To play the instrument, a musician presses strings down to the fingerboard to change the vibrating length, changing the pitch. This is called stopping the strings. Depending on the instrument and the style of music, the musician may pluck, strum or bow one or more strings with the hand that is not fretting the notes. On some instruments, notes can be sounded by the fretting hand alone, such as with hammer ons, an electric guitar technique.
The seven-string guitar adds one additional string to the more common six-string guitar, commonly used to extend the bass range or also to extend the treble range.
An eight-string guitar is a guitar with eight strings, or one more than the Russian guitar's seven. Eight-string guitars are less common than six- and seven-string guitars, but they are used by a few classical, jazz, and metal guitarists. The eight-string guitar allows a wider tonal range, or non-standard tunings, or both.
The baritone guitar is a guitar with a longer scale length, typically a larger body, and heavier internal bracing, so it can be tuned to a lower pitch. Gretsch, Fender, Gibson, Ibanez, ESP Guitars, PRS Guitars, Music Man, Danelectro, Schecter, Jerry Jones Guitars, Burns London and many other companies have produced electric baritone guitars since the 1960s, although always in small numbers due to low popularity. Tacoma, Santa Cruz, Taylor, Martin, Alvarez Guitars and others have made acoustic baritone guitars.
Herman Li is a Hong Kong-born British musician who is one of two lead guitarists for the power metal band DragonForce. Li has played with the band based in England since it was formed in 1999 by Li along with Sam Totman, both of whom are also the remaining original members of the band. Before DragonForce he was in the black metal band Demoniac.
Fredrik Carl Thordendal is a Swedish musician, best known as the lead guitarist and backing vocalist for the extreme metal band Meshuggah, of which he is a founding member. Along with Meshuggah's rhythm guitarist Mårten Hagström, Thordendal was rated No. 35 by Guitar World in the top 100 greatest heavy metal guitarists of all time.
Dino Cazares is an American musician, known for being the guitarist and one of the co-founders of industrial metal band Fear Factory. He is also the co-founder of the metal bands Divine Heresy, Asesino, and Brujeria. Cazares popularized the use of digital amp modelling processors, as well as the use of seven and eight-string guitars in metal music.
Christopher Alan Broderick is an American musician, best known as a former guitarist of the heavy metal band Megadeth. He is also formerly the lead guitarist and keyboardist for Jag Panzer, appearing on four of the band's albums, The Age of Mastery, Thane to the Throne, Mechanized Warfare and Casting the Stones. Prior to joining Megadeth and while still in Jag Panzer, he served as a touring guitarist for Nevermore from 2001 to 2003, and again between 2006 and 2007. Following his departure from Megadeth, Broderick formed Act of Defiance in 2014. He joined Swedish metal band In Flames in 2019 as a touring guitarist, before becoming the band's permanent rhythm guitarist in 2022.
The tenor guitar or four-string guitar is a slightly smaller, four-string relative of the steel-string acoustic guitar or electric guitar. The instrument was initially developed in its acoustic form by Gibson and C.F. Martin so that players of the four-string tenor banjo could double on guitar.
An extended-range bass is an electric bass guitar with a wider frequency range than a standard-tuned four-string bass guitar.
The following outline is provided as an overview of and topical guide to guitars:
A multi-neck guitar is a guitar that has multiple fingerboard necks. They exist in both electric and acoustic versions. Examples of multi-neck guitars and lutes go back at least to the Renaissance.
Mårten Hans Hagström is a Swedish musician, best known as the rhythm guitarist for the extreme metal band Meshuggah. He joined the band after the release of their first album, which allowed Jens Kidman to focus on his vocal performances and give up rhythm guitar duties. He and fellow Meshuggah guitarist Fredrik Thordendal are known for their complex rhythm guitar playing. Hagström has cited Rush, James Hetfield, Squarepusher, Autechre, Strapping Young Lad, and GISM as influences.
An experimental musical instrument is a musical instrument that modifies or extends an existing instrument or class of instruments, or defines or creates a new class of instrument. Some are created through simple modifications, such as cracked cymbals or metal objects inserted between piano strings in a prepared piano. Some experimental instruments are created from household items like a homemade mute for brass instruments such as bathtub plugs. Other experimental instruments are created from electronic spare parts, or by mixing acoustic instruments with electric components.
The Ibanez Apex series is a signature series of seven-string guitars created by Korn's guitarist Munky.
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.
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