Dm7♭5
D half-diminished seventh
Notes
D – F – A♭ – C
Formula
1 – ♭3 – ♭5 – ♭7
A diminished triad with a minor seventh.
To build Dm7♭5, start on D and stack the intervals ♭3, ♭5, ♭7 above it.
On piano
On guitar
We don't have a verified, comfortable guitar shape for this chord yet, so we're not showing one.