7-String Guitar Chord Chart and Tabs in Open String Tuning

GbmM7, Gbm#7, Gb-M7, Gb−Δ7, Gb−Δ, Gb minmaj7
Notes: G♭, B♭♭, D♭, F
x,x,4,6,6,5 (xx1342)
x,4,x,2,6,2 (x2x131)
x,0,x,6,6,2 (x.x231)
x,8,4,6,x,5 (x413x2)
2,4,x,2,6,x (12x13x)
5,x,4,6,6,x (2x134x)
2,0,x,6,6,x (1.x23x)
5,8,4,6,x,x (2413xx)
5,x,x,6,6,2 (2xx341)
2,x,x,6,6,5 (1xx342)