Chords > Diminished 7th & Half diminished

Diminished 7th & Half diminished

How to read chord diagrams

Diminished 7th

Formula: I - bIII - bV - VI

D diminished 7th G diminished 7th A diminished 7th
     

 

Half diminished (m7b5)

Formula: I - bIII - bV - bVII

D half diminished A half diminished