C# 7sus4
Notes:C# – F# – G# – B
Formula:R-P4-P5-m7
Intervals:P1-P4-P5-m7
Scale Degrees:1-4-5-b7
Introduction
The C# 7sus4 piano chord (C#7sus4) consists of the notes C#, F#, G#, B. Formula: R-P4-P5-m7 | Scale degrees: 1-4-5-b7.
Enharmonic equivalent: C♯ is enharmonically equivalent to D♭. See Db 7sus4.
Notes
C# 7sus4 Inversions
| Position | Notes |
|---|---|
| Root Position | C#4 – F#4 – G#4 – B4 |
| 1st Inversion | F#4 – G#4 – B4 – C#5 |
| 2nd Inversion | G#4 – B4 – C#5 – F#5 |
| 3rd Inversion | B4 – C#5 – F#5 – G#5 |
Key Signature
The key of C# 7sus4 has 7 sharps: F♯, C♯, G♯, D♯, A♯, E♯, B♯.
F♯C♯G♯D♯A♯E♯B♯
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.