There are many ways to customize a multiple-necked guitar, such as the number of strings on each neck, frets or no frets, the tuning used on each neck, etc. One of the earliest designs still in regular use is the acoustic
contraguitar, invented around 1850 in
Vienna. This guitar, also known as the Schrammel guitar, has a fretted six-string neck and a second, fretless neck with up to nine bass strings. One of the more common combinations is where one neck of a double-necked guitar is set up as for a 6 string guitar and the other neck is configured as a 4 string bass guitar. Guitarist
Pat Smear of the
Foo Fighters utilizes a double-necked guitar during live performances (bass guitar top neck, six-string electric guitar bottom neck) in order to perform
Krist Novoselic's bass part in the song "I Should Have Known," from the album
Wasting Light, in addition to his own duties.
Rickenbacker International Corporation and
Gibson Guitar Corporation in the US have both manufactured production models of these configurations in the past. A less common configuration has a 12-string guitar neck combined with a 4-string bass guitar neck:
Geddy Lee of
Rush is well known for using the 4/12-string Rickenbacker 4080/12 production model live in the 1970s. of
Genesis, circa 1980, playing his custom
Shergold guitar in its
twelve-string/
bass double-necked configuration In the 1970s and 1980s
Mike Rutherford of
Genesis was known for playing a custom-made
Shergold Modulator twin-neck guitar-bass unit in live shows, as he frequently changed between lead guitar, 12-string guitar and bass guitar, depending on the arrangement of the song. The unique design of this guitar set is that it consists of several modular elements that could be separated and combined by a system of dowels and thumbscrews, including an electrical connection. The complete set originally consisted of a 6-string guitar "top-section", two 12-string guitar "top-sections" to have different tunings readily available, and a 4-string bass "bottom-section". The bass section could be attached to any of the top-sections to create a variety of twin-neck combinations. (Additionally there was a smaller lower-body-section which could be attached to any of the top-sections when they were not in use as part of a double-neck configuration, to complete the shape of a single guitar.) As a tongue-in-cheek reference to Rutherford's frequent use of this double-neck guitar, the puppet version of Rutherford in the video for "
Land of Confusion" plays a four-necked guitar. ==Multiple-necked bass guitars==