C♯ 7sus4
Also known as D♭ 7sus4
Same keys, different spelling.
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C♯7sus4
C♯ – F♯ – G♯ – B
Formula:R-P4-P5-m7
Intervals:P1-P4-P5-m7
Scale Degrees:1-4-5-b7
Introduction
The C♯ 7sus4 chord is a four-note chord made up of C♯, F♯, G♯, and B. It is built from a root, perfect fourth, perfect fifth, and minor seventh.
Notes
C♯ 7sus4 Inversions
| Position | Notes |
|---|---|
| Root Position | C♯ – F♯ – G♯ – B |
| 1st Inversion | F♯ – G♯ – B – C♯ |
| 2nd Inversion | G♯ – B – C♯ – F♯ |
| 3rd Inversion | B – C♯ – F♯ – G♯ |
Key Signature
The key of C# 7sus4 has 7 sharps.
F♯C♯G♯D♯A♯E♯B♯
Order of sharps
Sharps are added to a key signature in a fixed order. Each new sharp key adds the next sharp on the list.
F♯C♯G♯D♯A♯E♯B♯
Mnemonic: Father Charles Goes Down And Ends Battle
Chords in the Key of C♯ Major
These are the diatonic triads built on each degree of the C♯ major scale:
C
D
E
F
G
A
B
C
D
E
F
G
A
B
I — C♯ Major (major)
Theory: Intervals
Formula: R-P4-P5-m7
Intervals: P1-P4-P5-m7
The C♯ 7sus4 is built by stacking intervals from the root note. The formula R-P4-P5-m7 describes the scale degrees used. The intervals P1-P4-P5-m7 show the distance between each note in the chord.
C♯ 7sus4 — Frequently Asked Questions
What notes are in the C# 7sus4 chord?
The C# 7sus4 chord (C#7sus4) contains 4 notes: C#, F#, G#, B. Formula: R-P4-P5-m7.
How is C#7sus4 used in music?
C#7sus4 is used in jazz, fusion, and contemporary music to add harmonic color. It appears as a dominant or tonic chord depending on context.
What is the scale degree formula for C#7sus4?
C#7sus4 uses scale degrees 1-4-5-b7, giving it its distinctive sound.
Practice Tips
- Start by placing your thumb on C# and spacing remaining fingers across the chord.
- Practice C#7sus4 slowly with separate hands before combining.
- Listen carefully to the tension created by the altered tones in this chord.
- Try voicing C#7sus4 in different octaves to find the most comfortable position.
- Resolve C#7sus4 to a nearby chord to hear its function in context.
Related Tools
Chord FinderLook up any chord — see the notes, hear it, and play along.Chord DrillTimed drills to build speed and recognition across all chord types.Practice RoomPlug in a MIDI keyboard and get real-time feedback on every chord and scale.Circle of FifthsVisualize key relationships, relative minors, and key signatures.MIDI MonitorLive MIDI message stream with note names, velocity, and a scrolling staff.