Job for a Cowboy on "Sun Eater", Knocked Loose from A Different Shade of Blue onwards and Fear Factory.G/A tuning - G'-C-F-B-e-g-c' / A'-D-G-B-e-a-d'One and one half steps down from standard. Used by bands such as Deftones on their self-titled album and "Beware", Korn (on the song "Alone I Break", but on 14-string guitars). Also used by Mark Tremonti on the song "Show Me A Leader" (Myles uses a 6-String guitar tuned to D# Standard) and Spiritbox on "Electric Cross". G tuning - G'-C-F-A-d-g-c' / G'-C-F-B-e-g-c'Two full steps down from standard tuning. Used by Vildhjarta (G-C-F-A♯-D♯-G♯-c) and Luc Lemay of GorgutsF/G tuning - F'-B'-E-A-d-f-b / G'-B'-E-A-d-g-bTwo and one half steps down from standard. Used by Danish band Mnemic in the albums Passenger, Sons of the System, and Mnemesis. Fear Factory also used this tuning for their cover of Wiseblood's "0-0 (Where Evil Dwells)", while their all other songs tuned in F/G were played with eight-string guitars.F tuning - F'-A'-D-G-c-f-a / F'-B'-E-A-d-f-bThree full steps down from standard. Used by Suicide Silence on the song "Witness The Addiction", Crystal Lake and Meshuggah during the recording of Nothing. The songs are played live using 8 string guitars.E tuning - E'-A'-D-G-c-e-aThree and a half steps down from standard.F Tuning with Low E - E'-A'-D-G-c-f-a / E'-B'-E-A-d-f-b Used by Meshuggah on "Stengah", "Perpetual Black Second", "Glints Collide" and "Organic Shadows" from the Nothing album and on "Marrow" from the album Koloss, although the other guitar was in F. The songs are now performed on 8-String Guitars.D/E♭ tuning - D'-G'-C-F-B-d-g / E'-A'-D-G-B-e-aFour full steps down from standard. Used by Meshuggah on the song "Nebulous" from the album Nothing. Originally recorded on 7-String Guitars tuned down, the band switched to 8-String Guitars shortly after the album was released. The band play the song live a full step up from the original in F Standard Tuning on 8-String Guitars.D tuning - D'-G'-C-F-A-d-g / D'-G'-C-F-B-d-gFour and one half steps down from standard.C/D tuning - C'-F'-B'-E-A-c-f / D'-G'-B'-E-A-d-g/Five full steps down from standard.C tuning - C'-F'-A'-D-G-c-f / C'-F'-B'-E-A-c-fFive and one half steps down from standard.Octave Tuning - B"-E'-A'-D-G-B-eSix full steps (one octave) down from standard tuning. The open C tuning for 7-string guitar was Devin Townsend's preferred tuning for the extreme metal band Strapping Young Lad (GCGCGCE), used on their last two albums. Also used on most of Synchestra and Ziltoid the Omniscient, "Planet of the Apes" from Deconstruction, "War