E♭dim

Eb Diminished — tense and unstable by design — built from stacked minor thirds, it begs to resolve.

The keys
C4C5C6
E♭ – G♭ – A
What's inside E♭dim
NoteInterval from rootDegree
E♭Root1
G♭Minor 3rdb3
A (spelled B♭♭)Diminished 5thb5
Inversions
PositionKeys (low → high)
Root positionE♭4 – G♭4 – A4
1st inversionG♭4 – A4 – E♭5
2nd inversionA4 – E♭5 – G♭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)E♭2 – E♭3
Right (colour)G♭4 – A4
Where E♭dim lives

As the I chord

E♭dim → A♭ → B♭ → E♭dim

The classic I–IV–V–I motion with this chord as home.

In a ii–V–I

Fm7 → B♭7 → E♭dim

The strongest cadence in harmony, resolving onto this chord.

Put E♭dim 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 →