full steps down from standard Drop A.Drop C1 - C-G-C-F-A-D-G / C-G-C-F-B-D-GFour and one half steps down from standard Drop A. Used by Within the Ruins on the album Phenomena with the variation C-F-c-f-A#-D-G.Drop B0 - B-F-B-E-A-C-F / B-G-B-E-A-D-GFive full steps down from standard Drop A. Six full steps (one octave) down from a baritone Drop B guitarDrop A/Drop B - A-F-A-D-G-C-F / B-F-B-E-A-C-FFive and one half steps down from standard Drop A.Drop A0 tuning - A-E-A-D-G-B-ESix full steps (one octave) down from standard Drop A.Drop G#0 tuning -G♯-D♯-G♯-C♯-F♯-A♯-D♯ (One octave below drop G#). Used by American deathcore band Anzu.G + A# Standard - G-A#-D#-G#-C#-F-A# 6 String A# tuning with a low G1 on the bottom, Used by Crystal Lake since 2015. Eight-string A continuation of the seven-string guitar, the eight-string guitar adds another string a perfect fourth lower than the low B of the seven-string guitar. This additional low F string is just a whole step up from a bass guitars low E string. Standard 8-string tuning F'-B'-E-A-D-G-B-E'Standard eight-string tuning. Used by Scar Symmetry on the song "The Three-Dimensional Shadow" from the album Holographic Universe (album) and "Mechanical Soul Cybernetics" from the album Dark Matter Dimensions, Deftones on the Diamond Eyes album, Periphery, Dream Theater on "Awaken The Master", The Acacia Strain (on the song Unabomber), Volumes (band), Fear Factory on "Mechanize", "Metallic Division", "God Eater" and "Soul Hacker" and by Devil You Know on some songs. LowerF tuning - F'-B'-E-A-d-g-b-e'Half a step down from standard tuning. Used famously by Meshuggah, as well as After The Burial, Butcher Babies, and Carnifex on some songs, Galactic Pegasus uses a variation of this tuning with the 7th string tuned down to A, mostly used on the "Pariah" EP.E tuning - E'-A'-D-G-c-f-a-d'One full step down from standard tuning. Used by Meshuggah on "Stengah", "Perpetual Black Second", "Glints Collide" and "Organic Shadows" from the album Nothing and Korn on their Untitled album and on songs "Illuminati" and "Way Too Far" from their The Path of Totality album.E tuning- E'-A'-D-G-B-e-a-d'One and a half steps down from standard tuning. Used by Meshuggah on "Nebulous" from the album Nothing and Dissipate on their Tectonics EP.D tuning - D'-G'-C-F-a-d-g-c' Two full steps down from standard tuning.D tuning - D'-G'-B-E-a-d-g-b' Two and a half steps down from standard tuningA tuning - A"-D'-G'-C-F-A-d-gThree and one half steps down from standard tuning. HigherHigh A tuning - B'-E-A-d-g-b-e'-a'Standard seven string tuning