G Diminished 7th
Gdim7 · Root
Every chord tone stacked from the root up.
Click keys to experiment with the chord
G – B♭ – D♭ – F♭
1 – b3 – b5 – bb7
The Gdim7 chord sounds intensely tense and symmetrical, often used as a passing chord. Its notes are G, Bb, Db, Fb. This chord is commonly heard in jazz, and gypsy jazz.