E♭ minor 7th flat 5th chord on bass (E♭m7♭5)

Why it sounds like that

E♭ minor 7th flat 5th is built from the formula 1, ♭3, ♭5, ♭7. The diminished 5th between E♭ and B♭♭ gives the chord its tense, unresolved quality. Raising the ♭5 to a perfect 5th produces E♭ minor 7th, the closest stable contrast.

What goes wrong with E♭ minor 7th flat 5th?

• Letting the pinky collapse and mute the 2nd string.
• Fretting the 1st string with the ring finger too far from the fret, causing a buzz.
• Allowing the index finger to touch the 3rd string and deaden the E♭.

When to use it

E♭ minor 7th flat 5th functions as the ii chord in C♯ natural minor and the vii chord in E major. Use it in minor-key jazz and blues lines where the half-diminished colour leads to a dominant. It pairs naturally with E♭ minor and E♭ 5th.

Changing to and from E♭ minor 7th flat 5th

• Sliding the shape down one fret to the 10th fret gives D minor 7th flat 5th.

Which voicing to use

The 11th-fret root position keeps E♭ in the bass for a grounded sound. The E♭m7♭5/A inversion at the 5th fret places the diminished 5th in the bass, creating a darker, less stable feel. Choose the E♭m7♭5/C♯ inversion when the bass line needs to descend to D♭.