Cm7b5 Guitar Chord
Cm7b5 (C half-diminished seventh) is a four-note chord made from C, Eb, Gb and Bb. A half-diminished chord is a diminished triad with a minor seventh on top. It is the ii chord of a minor key, so it opens the minor ii-V-i that jazz leans on.
Cm7b5 C half-diminished seventh
3rd fret1 / 4
Notes
- C1
- Ebb3
- Gbb5
- Bbb7
Built from the root C, the minor third Eb, the flat fifth Gb and the minor seventh Bb.
How to play Cm7b5
Frets from low E to high E; x means don't play that string.
Easiest shape to start with: 3rd fret (x3434x). It has nothing above fret 4 and 2 muted strings.
Keys with Cm7b5
Every note of Cm7b5 is in these keys. The numeral is its place in the key.
Major keys
- viiø7 in Db major
Minor keys
- iiø7 in Bb minor