Edim7

E Diminished 7th — perfectly symmetrical stacked minor thirds — the ultimate passing chord, able to resolve almost anywhere.

The keys
C4C5C6
E – G – B♭ – D♭
What's inside Edim7
NoteInterval from rootDegree
ERoot1
GMinor 3rdb3
B♭Diminished 5thb5
D♭Diminished 7thbb7
Inversions
PositionKeys (low → high)
Root positionE4 – G4 – B♭4 – D♭5
1st inversionG4 – B♭4 – D♭5 – E5
2nd inversionB♭4 – D♭5 – E5 – G5
3rd inversionD♭5 – E5 – G5 – B♭5
A working voicing

Split the chord between two hands the way working players do — a solid shell low down, the colour tones up top:

HandKeys
Left (shell)E2 – D♭3
Right (colour)G4 – B♭4
Where Edim7 lives

As the ii chord

Edim7 → A7 → Dmaj7

Minor-family sevenths live on the ii — this is the move they were born for.

Stepwise colour

E → Edim7 → G♭m7

Used as a passing colour between neighbouring chords.

Put Edim7 under your fingers

Hear every voicing, see the keys light up, and drill it in the interactive Chord & Voicing Lab.

Open the Chord & Voicing Lab →