Piano chords › A diminished 7th

A diminished 7th chord

Symbol: Adim7 · Notes: A – C – E♭ – G♭

Three minor thirds stacked: the chord is symmetrical, it splits the octave into four equal parts. Very tense, it serves as a passing chord or in place of the dominant.

How it is built

• A: root
• C: minor third
• E♭: diminished fifth
• G♭: diminished seventh

Fingering: right hand 1 2 3 5, left hand 5 3 2 1 (1 = thumb, 5 = pinky).

Its inversions

• Root position: A – C – E♭ – G♭
• 1st inversion: C – E♭ – G♭ – A
• 2nd inversion: E♭ – G♭ – A – C
• 3rd inversion: G♭ – A – C – E♭

In which keys

• VII in B♭ harmonic minor

Other A chords

A · Am · A7 · Amaj7 · Am7 · Asus2 · Asus4 · Adim · A+ · A6 · Am6 · Aadd9 · Am7♭5

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