What notes are in the C♯m7♭5 chord?

C♯m7♭5 (C♯ half-diminished (ø)) contains C♯, E, G, B — formula 1 ♭3 ♭5 ♭7.

How do you play C♯m7♭5 on guitar?

A common shape is x42000 (low E to high E, x = muted string, open position). This page shows more shapes, drop 2, drop 3 and shell voicings in the interactive library.

What scale goes with C♯m7♭5?

Good choices to solo over C♯m7♭5: C♯ Locrian, C♯ Locrian ♮2, C♯ Blues.

What key is C♯m7♭5 in?

C♯m7♭5 is diatonic in D major (viiø7), B minor (iiø7).

C♯m7♭5 Chord on Guitar

C♯m7♭5 is the C♯ half-diminished (ø) chord — 4 notes (C♯, E, G, B) built from the formula 1 ♭3 ♭5 ♭7. Below are playable shapes across the fretboard, the keys it belongs to and the scales to use when soloing over it.

Notes: C♯ · E · G · BFormula: 1 · ♭3 · ♭5 · ♭7Hear it and see it on the fretboard ▸

C♯m7♭5: Chord shapes (open & barre)

open position
fret 2
fret 4
fret 9
fret 11

C♯m7♭5: Drop 2 voicings

bass: ♭5
bass: ♭5
bass: ♭5
bass: ♭7
bass: ♭7
bass: ♭7
bass: R
bass: R
bass: R
bass: ♭3
bass: ♭3
bass: ♭3

C♯m7♭5: Drop 3 voicings

bass: ♭3
bass: ♭3
bass: ♭5
bass: ♭5
bass: ♭7
bass: ♭7
bass: R
bass: R

C♯m7♭5: Shell voicings (jazz)

R-3-7
R-3-7
R-7-3
R-7-3

Keys that contain C♯m7♭5

Scales to play over C♯m7♭5

Ordered from the most common choice. All of them contain C♯, E, G, B.

Other C♯ chords

Triads

Sevenths

Sixths

Added

Extended

Half-diminished (ø) chords in other keys

FAQ

What notes are in the C♯m7♭5 chord?: C♯m7♭5 (C♯ half-diminished (ø)) contains C♯, E, G, B — formula 1 ♭3 ♭5 ♭7.
How do you play C♯m7♭5 on guitar?: A common shape is x42000 (low E to high E, x = muted string, open position). This page shows more shapes, drop 2, drop 3 and shell voicings in the interactive library.
What scale goes with C♯m7♭5?: Good choices to solo over C♯m7♭5: C♯ Locrian, C♯ Locrian ♮2, C♯ Blues.
What key is C♯m7♭5 in?: C♯m7♭5 is diatonic in D major (viiø7), B minor (iiø7).