C#7sus4 — C# dominant seventh suspended fourth chord
A dominant seventh chord with the third replaced by the fourth. The same notes as the minor eleventh chord a fifth above minus the ninth.
- 1 = C#
- 4 = F#
- 5 = G#
- b7 = B
- Symbol
- C#7sus4
- Root
- C#
- Quality
- Dominant seventh suspended fourth
- Family
- suspended
- Notes
- C# F# G# B
- Degree formula
1 4 5 b7- Semitones from the root
0 5 7 10- Distinct pitch classes
- 4
- Interval structure
- Stacked from the root: 5 semitones, 2 semitones, 3 semitones
- Notation
- Written 7sus4. Very common in guitar accompaniment because the open shapes are easy to move.
- Key
- C# · C# major / A# minor key signature
Formula
The chord tones in order from the root, with the interval each one forms above it.
| Degree | Note | Semitones | Interval from the root |
|---|---|---|---|
| 1 | C# | 0 | Perfect unison |
| 4 | F# | 5 | Perfect fourth |
| 5 | G# | 7 | Perfect fifth |
| b7 | B | 10 | Minor seventh |
Inversions
An inversion is the same set of notes with a different one in the bass. The last column gives the distance of each note above the bass note, in semitones.
| Inversion | Bass note | Degree in the bass | Notes above the bass | Semitones above the bass |
|---|---|---|---|---|
| root position | C# | 1 | C# – F# – G# – B | 0 5 7 10 |
| first inversion | F# | 4 | F# – G# – B – C# | 0 2 5 7 |
| second inversion | G# | 5 | G# – B – C# – F# | 0 3 5 10 |
| third inversion | B | b7 | B – C# – F# – G# | 0 2 7 9 |
Playable voicings
These shapes were found by searching the fretboard of a standard-tuned guitar (E A D G B E) rather than copied from a chord book. The search allows every string to sound or to be muted, rejects any shape with a muted string between two sounding strings, rejects any shape whose fretted notes span more than four frets (a five-fret window), requires every chord tone to be present, and then sorts what remains with root-position shapes first and the most compact, lowest shapes next. The shapes shown are the first six of that ordering; other orderings are possible at the same frets.
| # | Shape (low string first) | Notes | Degrees | Bass | Span (frets) | Sounding strings |
|---|---|---|---|---|---|---|
| 1 | 9-9-9-11-9-9 | C# F# B F# G# C# | 1 4 b7 4 5 1 | C# | 2 | 6 |
| 2 | 9-11-9-11-9-9 | C# G# B F# G# C# | 1 5 b7 4 5 1 | C# | 2 | 6 |
| 3 | 9-9-6-6-7-7 | C# F# G# C# F# B | 1 4 5 1 4 b7 | C# | 3 | 6 |
| 4 | 9-9-6-6-9-7 | C# F# G# C# G# B | 1 4 5 1 5 b7 | C# | 3 | 6 |
| 5 | 9-9-9-6-9-7 | C# F# B C# G# B | 1 4 b7 1 5 b7 | C# | 3 | 6 |
| 6 | 9-9-9-6-9-9 | C# F# B C# G# C# | 1 4 b7 1 5 1 | C# | 3 | 6 |
Shape numbers run from the lowest string to the highest, so the left-hand number is the sixth string (low E) in standard tuning. Multiple shapes are listed because a chord can be voiced several ways, and because a lower position is not always the better sounding one.
Related chords and scales
- KeyEverything in C#
- ScaleC# mixolydian
Related
- KeyKey of C#
- ScaleC# mixolydian
- ChordC#sus2 — Suspended second
- ChordC#sus4 — Suspended fourth
- ChordC#11 — Dominant eleventh
- DegreesC# — degree map
- Neck mapC# — note map
- ScaleC# aeolian