- C-G-d-a-e'An all fifths tuning as used on cello or mandolin, extended to five strings. Used by the noise-rock band Lightning Bolt, and by Jeffrey McFarland-Johnson on his Bach Cello Suites album.Baritone - E-A-d-f-bIn this tuning, the fourth (G) string is lowered a half-step, thus recreating the intervals between the top five strings, lowered a perfect fourth. Though chords can easily and more fully be played from this tuning, it sometimes results in awkward inversions, a relatively minor problem if the five-string is played in an ensemble with a bass guitar. E-A-c-f-bSimulates the top four strings, followed by the second-from-bottom string on top, raised a whole step (the F representing both the top and bottom E). It makes playing in the key of A major easier, though chord fingerings have to be altered unless the strings are rearranged to F-B-E-A-C.Open G tuning - G-d-g-b-d'Some slide/bottleneck guitarists omit the bottom E string when playing in open G to have the root note as the tonic. This tuning is used by Keith Richards.Open E5 tuning - E-B-e-b-e'This is achieved by removing the fourth (G) string, tuning both Es and the B down a half step, and the A and D strings up a half-step. This creates a five-string power chord. Extended-range guitar tunings Seven-string Similar to five-string bass guitar tuning, seven-string tuning allows for the extra string a fourth lower than the original sixth string. This allows for the note range of B standard tuning without transposing E standard guitar chords down two and a half steps down. Baritone 7-string guitars are available which features a longer scale-length allowing it to be tuned to a lower range.Standard 7-string tuning - B'-E-A-d-g-b-e'Standard tuning for a seven-string guitar. Used by Fear Factory, In This Moment, Animals as Leaders, Unearth, Nickelback on the song "Burn It To The Ground" and more recent material, Decapitated, Trivium (band) on much of Shogun, and The Crusade (album), Dream Theater (since Awake), Crossfade on some songs, Hypocrisy, Lacuna Coil, and All That Remains on some songs, Wormed, John Prine also used it on performances of "Fish and Whistle" from 1998 to 2020, to accommodate the permanent change in his voice following his battle with throat cancer. Drop D 7-string tuning - D-D-A-d-g-b-e'This is the standard seven-string tuning with the low B string raised to D and lower E string dropped to D. The Drop C variation of this tuning