Cm7♭5
C half-diminished seventh
Notes
C – E♭ – G♭ – B♭
Formula
1 – ♭3 – ♭5 – ♭7
A diminished triad with a minor seventh.
To build Cm7♭5, start on C 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.