Guitar Chord Chart and Tabs in Drop Half Tuning

BbM7b9, BbMa7b9, BbΔ7b9, BbΔb9
Notes: B♭, D, F, A, C♭
8,9,9,8,11,8 (123141)
x,9,9,8,11,8 (x23141)
8,9,9,8,11,x (12314x)