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Guitar chords · Diminished 7th

G°7 chord on guitar (Gdim7)

G°7 (G ) has four notes: G, B♭, D♭ and F♭ (played as E), the , ♭3, ♭5 and 𝄫7.

Shapes

How to play G°7

Strum a shape to hear it, or pick it one string at a time. R marks the ; the other numbers are the chord tones.

G°7 has no common . Play it as the E shape at 3 or the A shape at fret 10. A keeps its fingering anywhere on the neck: slide it up or down and the , on the lowest played string, names the chord.

  • E shape · fret 3

    3frR♭5R♭3𝄫7RGD♭GB♭F♭G
  • A shape · fret 10

    9fr××R♭5𝄫7♭3GD♭F♭B♭
Name a shape you're holding: the chord finder

Notes and formula

What makes G°7 diminished 7th

A chord stacks three minor 3rds, so every note is the same distance from the next. It is the vii°7 of the and pulls hard to the chord a above its .

  • 1Root: the note the chord is named after. Keep it.
  • 3Essential: makes the chord what it is. Never drop it.
  • 5Optional: drop it first when you run out of fingers.

The ♭3rd, the ♭5th and the 𝄫7th make G°7 a chord.

  1. GRroot
  2. B♭♭3essential
  3. D♭♭5essential
  4. F♭𝄫7essential
EADGBE0135791215GGGGGGGGGF♭B♭D♭F♭B♭D♭F♭B♭F♭B♭D♭F♭B♭D♭F♭B♭D♭F♭B♭D♭F♭B♭D♭F♭
  • G, the root
  • Other chord tones

G°7 usually resolves up a to A♭ or G♯m, the chord it leads into. Its four notes are evenly spaced, so the same shape also works as A♯°7, C♯°7 and E°7, leading to B, D and F.

Keys

Keys with G°7

G°7 belongs to one key: A♭ minor (vii°7, ).

Numerals follow the key's own scale, so III, VI and VII in a minor key are its own major chords. A ♭ or ♯ in front marks a chord from outside the key. How Roman numerals work

Slash chords

G°7 over another bass note

A keeps G°7 on top and puts another note in the bass: the letter after the slash is the lowest note you play.

  • G°7/B♭

    G°7 with its ♭3rd, B♭, in the bass: the first inversion.

  • G°7/D♭

    G°7 with its ♭5th, D♭, in the bass: the second inversion.

  • G°7/F♭

    G°7 with its 𝄫7th, F♭, in the bass: the third inversion.

Questions

G°7, in short

What notes are in the G°7 chord?
G°7 (G ) has four notes: G, B♭, D♭ and F♭ (played as E), the , ♭3, ♭5 and 𝄫7.
How do you play G°7 on guitar?
G°7 has no common . Play it as the E shape at 3 or the A shape at fret 10.
What key is G°7 in?
G°7 belongs to one key: A♭ minor (vii°7, ).
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