Eb Half-diminished
Ebm7b5
Notes
Eb · Gb · Bbb · Db
Intervals
- RootEb (1P)
- Minor 3rdGb (3m)
- Diminished 5thBbb (5d)
- Minor 7thDb (7m)
Fretboard
On the fretboard, Bb represents Bbb.
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About
The E♭ half-diminished (E♭–G♭–B♭♭–D♭), also written E♭ø7, is the naturally occurring chord on the seventh degree of a major scale and on the second degree of a natural minor scale. Its primary role in jazz is as the ii chord in a minor ii–V–i: E♭m7♭5 → A♭7 → D♭m. The B♭♭ is the defining color tone — without it, the chord collapses to a plain E♭m7. The 3rd and ♭7 together establish the minor seventh quality. On guitar, the fifth is essential and should not be omitted, since the ♭5 is precisely what distinguishes this chord. Compared to E♭dim7, m7♭5 is more grounded due to the natural (rather than doubly-flatted) seventh, giving it a somber but less frantic character.
Similar chords
Chords sharing two or more notes with this one, ranked by overlap.
Scales containing this chord
- E♭ Blues (deg 1)
- E♭ Minor Pentatonic (deg 1)
- E♭ Natural Minor (I)
- A♭ Natural Minor (V)
- B Major (III)
- B♭ Diminished (deg 4)
- B♭ Harmonic Minor (IV)
- B♭ Natural Minor (IV)
- D♭ Diminished (deg 2)
- D♭ Harmonic Minor (II)
- D♭ Major (II)
- D♭ Melodic Minor (II)
- D♭ Natural Minor (II)
- E Diminished (deg 8)
- F♯ Major (VI)
- F♯ Major Pentatonic (deg 5)
- G Diminished (deg 6)
- E♭ Dorian (I)
- E♭ Locrian (I)
- E♭ Phrygian (I)
- A♭ Dorian (V)
- A♭ Locrian (V)
- A♭ Mixolydian (V)
- A♭ Phrygian (V)
- B Lydian (III)
- B♭ Locrian (IV)
- B♭ Phrygian (IV)
- C Locrian (III)
- D♭ Dorian (II)
- D♭ Locrian (II)
- D♭ Mixolydian (II)
- D♭ Phrygian (II)
- E Lydian (VII)
- F Locrian (VII)
- F Phrygian (VII)
- F♯ Lydian (VI)
- F♯ Mixolydian (VI)
Scales whose notes include every chord tone. Roman numeral marks the chord root’s position in the scale; dashed badges aren’t linked yet.