About the Adim7 chord
The diminished seventh is built entirely from minor thirds, so the same shape repeats every three frets. It is a dramatic passing chord in jazz, gypsy swing and classical music. The symbol for it is Adim7.
A1
C♭3
E♭♭5
G♭𝄫7
How to play Adim7
- Lay your index finger flat across the top 6 strings at fret 5, pressing just behind the fret.
- Put your middle finger on the A string at fret 6.
- Put your ring finger on the D string at fret 7.
- Put your little finger on the B string at fret 7.
- Strum all six strings.
1 index · 2 middle · 3 ring · 4 little
Other A chords
Adim7 chord questions
What notes are in a Adim7 chord?
Adim7 is made of A, C, E♭ and G♭. In intervals that is 1, ♭3, ♭5, 𝄫7 above the root, A.
What is the easiest way to play Adim7?
The first shape above is the most common one: 5 6 7 5 7 5 from the low E string to the high E, where x means don't play that string and 0 means play it open. Start there, and try the other shapes once it feels comfortable.
Is Adim7 a barre chord?
The main shape uses a barre, where one finger holds down several strings at once. Press just behind the fret and roll the finger slightly onto its side.