Everything you need to know about seven- and eight-string guitars | Guitar World
Perfect Guitar Tuner (Drop E - High = E B E A C# F#) - YouTube
Drop F Tuning: A Thorough Guide [2022 Edition]
Drop D To Double Drop D, And Everything In Between (6 String to 8 String Guitar Riff Compilation) - YouTube
BLOGoZON No.410 - 8 string (EBEADGBE - Drop E) C pentatonic major scale box shapes plus MTD 534/24 Buckeye Burl
How to Tune a 7 String Guitar (Songs, Alternate Tunings, Diagrams) - Guitar Gear Finder
BLOGoZON No.465 - 8 string guitar (EAEADGBE - Drop E tuning) C natural octaves, C major arpeggio, C major scale, C pentatonic major, C major-minor arpeggio, C major blues box shapes plus