1,008 guitar chords with several shapes each, finger numbers, difficulty and real sound, in any tuning.
C♯m7♭5 (also written D♭m7♭5) is a half-diminished chord made of 4 notes: C♯, E, G, B. It sounds dark and searching, and you hear it in the ii chord of a minor key, as in a minor ii–V–i. It is the vii° chord of D major and turns up in 1 other key.
The library above opens on C♯m7♭5 with 14 shapes up and down the neck. Tap a shape to hear it, or play it one string at a time.
| Note | Degree | Interval from C♯ | Semitones |
|---|---|---|---|
| C♯ | 1 | root | 0 |
| E | ♭3 | minor third | 3 |
| G | ♭5 | diminished fifth | 6 |
| B | ♭7 | minor seventh | 10 |
Formula: 1 – ♭3 – ♭5 – ♭7. With the other spelling, D♭m7♭5 is D♭, F♭, A𝄫, C♭: the same sounds under different names.
x42000x4x000x4545x9(10)99xx979000xx(11)(12)(12)(12)The open position shape is the one to learn first. Once it is easy, try the shape at the 9th fret (9(10)99xx): the same chord, higher and brighter, handy when the chords before and after it sit up the neck.
C♯m7♭5 belongs to 2 keys: vii° in D major, ii° in B minor. In D major, try I–V–vi–IV: D – A – Bm – G.
C♯, E, G, B: the root, minor third, flat fifth, minor seventh.
Open position: x42000 (low string first), rated Beginner.
C♯m7♭5 has G where C♯m7 has G♯. C♯m7♭5 sounds dark and searching; C♯m7 sounds soft and mellow, a minor chord with the edge taken off.
No. The easiest shape is rated Beginner and needs 2 fingers.