How to play Cm7b5: a half-diminished (m7b5) built on C, with 1 voicing, the notes, the keys it belongs to, and songs that use it.
The first diagram is a common voicing: played at the first few frets. An X above a string means don't play it; an O means play it open.
Frets from the low E string to the high E string: x 3 4 3 4 x (x = not played).
| Note | C | Eb | Gb | Bb |
|---|---|---|---|---|
| Interval | R | b3 | b5 | b7 |
Cm7b5 is a half-diminished (m7b5) with C as its root. The full theoretical spelling is C, Eb, Gb, Bb. This voicing sounds every chord tone.
Cm7b5 is a diatonic chord (built from the key's own notes) in 1 major key and 2 minor keys. The roman numeral is the chord's place in that key; tap a key for all of its chords.
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Cm7b5 is spelled C, Eb, Gb, Bb: the root, minor 3rd, flat 5th, flat 7th. The common guitar voicing sounds every one of them.
Frets from the low E string to the high E string: x 3 4 3 4 x (x means the string is not played). Lay your index finger across the 3rd fret from the A string to the G string (a barre). Add the D and B strings at the 4th fret. Strum from the A string down, skipping the high E string; the low E string stays silent.
Cm7b5 belongs to 3 keys: Db major (the viiø chord), Bb minor (the iiø) and G minor (the ivø, from the harmonic minor).
