1,008 guitar chords with several shapes each, finger numbers, difficulty and real sound, in any tuning.
C♯add9 (also written D♭add9) is a added ninth chord made of 4 notes: C♯, E♯, G♯, D♯. It sounds shimmering: a major chord with an extra note on top, and you hear it in acoustic pop and rock, and pretty versions of plain major chords. It is the I chord of D♭ major and turns up in 5 other keys.
The library above opens on C♯add9 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 | major third | 4 |
| G♯ | 5 | perfect fifth | 7 |
| D♯ | 9 | major ninth | 14 |
Formula: 1 – 3 – 5 – 9. On guitar the 5th is often left out of the bigger shapes without changing the chord. With the other spelling, D♭add9 is D♭, F, A♭, E♭: the same sounds under different names.
xx(11)(10)9(11)x41121x43141x4364496666998686xThe fret 9 shape is the one to learn first. Once it is easy, try the shape at the 6th fret (966669): the same chord, higher and brighter, handy when the chords before and after it sit up the neck.
C♯add9 belongs to 6 keys: I in D♭ major, V in F♯ major, IV in A♭ major, VII in E♭ minor, VI in F minor, III in B♭ minor. In D♭ major, try I–V–vi–IV: C♯add9 – A♭ – B♭m – G♭.
C♯, E♯, G♯, D♯: the root, major third, fifth, ninth.
Fret 9: xx(11)(10)9(11) (low string first), rated Easy.
C♯add9 has the same notes where C♯9 has B. C♯add9 sounds shimmering: a major chord with an extra note on top; C♯9 sounds funky and full, a seventh chord with more colour.
No. The easiest shape is rated Easy and needs 4 fingers.