About C#sus2sus4 — drop 2 voicings
C#sus2sus4 is C#, D#, F# and G# — C#sus4 with the second added underneath the fourth.
It sounds ringing and deliberately ambiguous. Read another way it is a stack of fourths, which is why it works as a pad rather than as a chord that resolves.
C#sus2sus4 notes and formula
| C# | D# | F# | G# |
|---|---|---|---|
| 1 | 2 | 4 | 5 |
Texture more than function — still no third.
Also written C#sus2/4 or C# suspended 2nd and 4th. The same chord either way; which spelling you meet depends on who wrote the chart.
How to play C#sus2sus4
Take the four notes stacked as close together as they go, then drop the second voice from the top an octave. The gap it opens is what makes the chord sound like a chord rather than a cluster.
It lands on four adjacent strings, which is why it is the workhorse voicing on guitar.
C#sus2sus4 has 13 of them, on the top four strings, the bottom four strings and the middle four strings, from open position up to the 13th — every inversion the chord has: C# in the bass, D# in the bass, F# in the bass and G# in the bass. The one to learn first is the D# shape at the nut, which is the easiest grip here.
5 of them sit on the top four strings, so you can run the inversions up one set without changing strings — which is the whole reason to learn them as a family rather than as separate grips.
Start with x41122 — no barre and down at the nut. None of the shapes for C#sus2sus4 uses an open string, so every one of them is movable; the lowest sits at the 1st fret. 2 of the 4 need a barre. Together they cover the neck from the 1st fret to the 11th.
| Frets | Where | Bass | Top | Hand |
|---|---|---|---|---|
| x41122 | 1st fret | C#, root position | F# | all fretted |
| x44644 | 4th fret | C#, root position | G# | barred |
| 9968xx | 6th fret | C#, root position | D# | all fretted |
| 9-9-11-11-9-11 | 9th fret | C#, root position | D# | barred |
The same notes rebuilt from scratch give 9 drop 3 voicings, each on its own page.
How to use C#sus2sus4
In which keys. Every note of C#sus2sus4 belongs to C# major (the I), C# minor (the i), Eb minor (the ♭VII), E major (the vi), F# major (the V), Ab minor (the iv), Bb minor (the ♭III) and B major (the ii).
What to play over C#sus2sus4
Every note of C#sus2sus4 is in C# major, C# mixolydian, C# dorian, C# natural minor and C# harmonic minor.
Chords near C#sus2sus4
Change one note of C#sus2sus4 and you have C#sus2 (drop the fourth), C#sus4 (drop the ninth), C#add9 (the fourth becomes a major third), C#madd9 (the fourth becomes a minor third) or C#7sus4 (the ninth becomes a flat seventh).
C#sus2sus4 is a suspended chord — root and fifth, with a second or fourth where the third would be — or nothing at all. Suspended and power chords on every root.
On C#sus2sus4’s sound and use this page follows Robert Rawlins & Nor Eddine Bahha, Jazzology (Hal Leonard, 2005). The shapes and the derived voicings come from different places, and both are explained in where the chords and the theory come from.