A♭m7♭5
A♭ half-diminished seventh
Notes
A♭ – C♭ – E𝄫 – G♭
Formula
1 – ♭3 – ♭5 – ♭7
A diminished triad with a minor seventh.
To build A♭m7♭5, start on A♭ 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.