Sus4 chord - ukulele
The sus4 chord (suspended 4) is a triad where the third is replaced by a perfect fourth. This substitution creates a harmonic suspension that naturally calls for resolution.
Intervals
| Degree | I | IV | V |
|---|---|---|---|
| Interval | Root | Perfect fourth | Perfect fifth |
| Semitones | 0 | 5 | 7 |
Formula 1 - 4 - 5
Theory
The sus4 chord replaces the third with a perfect fourth (5 semitones). C sus4 = C-F-G, D sus4 = D-G-A. The fourth creates stronger tension than in the sus2, typically resolving to a major chord by descending a semitone. It's the most common suspended chord.
Examples
Example: Do Sus4
Open position
Styles
Sus4 chord construction
Formula 1 - 4 - 5: third replaced by perfect fourth. Example Csus4: C - F - G. Tension seeking resolution to major.
Learning
Sus4 → major resolutions (The Who, Led Zeppelin). Gospel: suspended cadences. Rock: harmonic power.
How to play
Classic rock, gospel. Characteristic sus4 → major resolution (Csus4 → C). Suspended cadences. Powerful open positions.