7-String Guitar Chord Chart and Tabs in Drop a Tuning

CbmM13, Cb-M13, Cb minmaj13
Notes: C♭, E♭♭, G♭, B♭, D♭, F♭, A♭
11,10,9,9,9,11,9 (3211141)
9,10,11,9,9,11,9 (1231141)
11,9,9,9,9,11,10 (3111142)
9,9,11,9,9,11,10 (1131142)