C#m7♭5 chord on 6-String Guitar – Open A
in Open A (E-A-C#-E-A-E) tuning · Also known as Spanish A
C#m7♭5
Half-Diminished
Notes:C# · E · G · B
Piano Left hand Right hand
Fingerings (16)
C#m7♭5 shapes as text
| Shape | Frets | Fingers | Notes | Difficulty |
|---|---|---|---|---|
| x x 0 0 2 3 | – – – – 1 2 | x x C# E B G | easy | |
| x 4 3 3 2 x | – 4 2 3 1 – | x C# E G B x | medium | |
| x 4 3 7 4 3 | – 2 1 4 3 1 | x C# E B C# G | hard · barre on fret 3 | |
| x 4 6 7 4 0 | – 1 2 3 1 – | x C# G B C# E | medium · barre on fret 4 | |
| 9 7 6 7 x x | 4 2 1 3 – – | C# E G B x x | medium | |
| 9 7 10 7 10 7 | 2 1 3 1 4 1 | C# E B B G B | medium · barre on fret 7 | |
| 9 10 10 9 10 0 | 1 2 3 1 4 – | C# G B C# G E | medium · barre on fret 9 | |
| x x 0 3 2 0 | – – – 2 1 – | x x C# G B E | easy | |
| x 4 3 x 2 3 | – 4 2 – 1 3 | x C# E x B G | hard | |
| x 4 3 7 7 3 | – 2 1 3 4 1 | x C# E B E G | hard · barre on fret 3 | |
| x 4 6 0 4 7 | – 1 3 – 2 4 | x C# G E C# B | medium | |
| 9 x 6 0 7 7 | 4 – 1 – 2 3 | C# x G E E B | hard | |
| 9 10 10 7 7 7 | 2 3 4 1 1 1 | C# G B B E B | medium · barre on fret 7 | |
| 9 10 10 0 10 0 | 1 2 3 – 4 – | C# G B E G E | medium | |
| x 4 0 0 2 3 | – 3 – – 1 2 | x C# C# E B G | medium | |
| x 2 3 3 4 x | – 1 2 3 4 – | x B E G C# x | medium |
The C#m7♭5 chord (Half-Diminished) is built from the notes C#, E, G, B. Below are playable fingerings for 6-String Guitar – Open A generated for your selected tuning, ordered from open-position shapes up the neck. Tap a diagram to hear it, or switch to the piano view to see the same harmony on keys.
How the C#m7♭5 chord is built
Formula: 1 · ♭3 · ♭5 · ♭7
| Degree | Semitones | Note |
|---|---|---|
| 1 | 0 | C# |
| ♭3 | 3 | E |
| ♭5 | 6 | G |
| ♭7 | 10 | B |
More C# chords
Other roots
See C#m7♭5 in another tuning
What notes make up the C#m7♭5 chord?
C#m7♭5 is a Half-Diminished chord built from the notes C#, E, G, B.
How do I read the diagram?
Strings run left to right from the lowest to the first string; the numbers show which finger presses each fret. An ○ marks an open string, an ✕ marks a muted one.