D minor 7th flat 5th chord on bass (Dm7♭5)

Why it sounds like that

D minor 7th flat 5th is built from the formula 1, ♭3, ♭5, ♭7. The diminished 5th between D and A♭ creates the chord's characteristic tension. Raising the ♭5 to a perfect 5th produces D minor 7th, the closest stable contrast.

What goes wrong with D 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 D.

When to use it

D 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 D minor and D 5th.

Changing to and from D minor 7th flat 5th

• Sliding the shape down one fret to the 9th fret gives C♯ minor 7th flat 5th.
• Sliding the shape up one fret to the 11th fret gives E♭ minor 7th flat 5th.

Which voicing to use

The 10th-fret root position keeps D in the bass for a grounded sound. The Dm7♭5/F inversion at the 1st fret places the minor 3rd in the bass, creating a darker, less stable feel. Choose the Dm7♭5/A♭ inversion when the bass line needs to descend to A♭.