A suspended chord replaces the 3rd of a triad with another note: a sus4 chord replaces it with the perfect 4th, five semitones above the root, and a sus2 chord replaces it with the major 2nd, two semitones above the root. Csus4 is C, F and G; Csus2 is C, D and G, and neither is major or minor.
What is a suspended chord?
A suspended chord is a triad with its 3rd taken out and replaced by a neighbouring note. The name comes from the classical technique of suspension, where a note from the previous chord is held over into the next one, creating a brief clash before it resolves. In a sus4 chord the replacement note is the perfect 4th, five semitones above the root. In a sus2 chord it is the major 2nd, two semitones above the root. Because the 3rd is the note that decides whether a chord is major or minor, a suspended chord is neither: it floats, open and unresolved, until the 3rd returns. Suspended chords are some of the most useful chords in popular music precisely because they are unresolved. A sus4 chord creates a gentle tension that begs to resolve back to the major triad, and that tiny movement, F falling to E inside a C chord, is one of the most satisfying sounds in music. A sus2 chord is softer and more open, often used as a colour rather than a tension, and it can sit happily for a whole bar without resolving. Both types appear constantly in rock, pop, folk and worship music, usually right before the chord they decorate.
How suspended chords are built
Start with the major triad and swap the 3rd. C major is C, E and G. Replace E with F, the perfect 4th, and you have Csus4: C, F and G. Replace E with D, the major 2nd, and you have Csus2: C, D and G. The root and the 5th never change, so the chord keeps its home note and its stability while losing its major-or-minor identity. The same swap works on any root: G major is G, B and D, so Gsus4 is G, C and D, and Gsus2 is G, A and D. The resolution is built into the chord's structure. In Csus4 the 4th, F, sits one semitone above the 3rd, E, so it naturally falls down to E when the chord resolves to C major. In Csus2 the 2nd, D, sits two semitones above the root and one whole tone above the 3rd, so it usually rises to E or falls to C. Guitarists use this constantly: the Csus4 guitar chord is played by adding one finger to the C major shape, and lifting that finger resolves it back to C. The G major guitar chord and its suspended versions work the same way.
Worked example — Dsus4 to D. D major is D, F# and A. Replace F# with G, the perfect 4th above D, and you have Dsus4: D, G and A. The G sits one semitone above F#, so it falls neatly to F# when the chord resolves. On guitar the Dsus4 guitar chord is an open shape that rings beautifully, and the Dsus4 to D movement is one of the first resolutions most players learn. Compare it with the Dsus2 guitar chord, D, E and A, which sounds more open and less urgent. The chord finder builds any suspended chord from any root.
How to practise suspended chords
Practise suspended chords as movements, not as static shapes: the resolution is the lesson. Play each pair slowly and listen for the release.
- Play Csus4 to C, Gsus4 to G and Dsus4 to D, holding the suspended chord for a full bar before letting it resolve.
- Play Csus2 to C and Gsus2 to G, noticing that the sus2 resolution feels gentler and less dramatic than the sus4.
- On guitar, take the open C major guitar chord and add your pinky to the 3rd fret of the high E string to make Csus4, then lift it again.
- On piano, play a C major triad, move the middle note up one key to F for Csus4, then move it back down to E, repeating the movement until it is smooth.
- Use the chord progression builder to try a sus4 chord before the V chord in a progression and hear how it delays the resolution.
Common mistakes
- Treating a sus chord as a finished chord — A sus4 chord wants to resolve. Leaving it hanging at the end of a phrase sounds unfinished unless that is a deliberate effect, so resolve it or move on quickly.
- Confusing sus4 with add4 — A sus4 chord replaces the 3rd, while an add4 chord keeps the 3rd and adds the 4th as well. Csus4 is C, F and G; Cadd4 would be C, E, F and G, a much denser and more dissonant sound.
- Playing sus2 and sus4 interchangeably — They are different colours: sus4 is tense and pulls toward resolution, sus2 is open and can stand alone. Swapping one for the other changes the feeling of the passage, so choose deliberately.
Quick reference
Suspended chords are easiest to learn in pairs, because the sus2 and sus4 versions of a chord share the same root and the same 5th, and only the middle note changes. This table lists both versions on four roots, so you can see the 2nd sitting two semitones above the root and the 4th sitting five semitones above it, and you can play each pair and hear the difference.
| Root | Sus2 chord | Sus4 chord |
|---|---|---|
| C | C – D – G | C – F – G |
| G | G – A – D | G – C – D |
| D | D – E – A | D – G – A |
| A | A – B – E | A – D – E |
Practise the table by playing each row as a movement: sus2 to the major triad, then sus4 to the major triad, and listen for the gentler resolution of the sus2 and the stronger pull of the sus4. When you can play both resolutions smoothly on all four roots, suspended chords will feel like a natural part of your playing.
Frequently asked questions
What notes are in a sus4 chord?
The root, the perfect 4th and the perfect 5th. Csus4 is C, F and G. The 4th sits five semitones above the root and replaces the 3rd, which is why a sus4 chord is neither major nor minor.
What notes are in a sus2 chord?
The root, the major 2nd and the perfect 5th. Csus2 is C, D and G. The 2nd sits two semitones above the root and replaces the 3rd, giving the chord an open, floating quality.
Is a suspended chord major or minor?
Neither. The 3rd is the note that decides major or minor, and a suspended chord has no 3rd at all. That is why suspended chords work in both major and minor contexts and sound unresolved on their own.
Why do suspended chords resolve?
Because the suspended note sits a semitone or a tone away from the 3rd it replaced, and the ear expects it to move to that nearby note. In Csus4 the F is one semitone above E, so it falls to E; in Csus2 the D is a tone above C and below E, so it moves to either.
Can I use a sus chord without resolving it?
Yes, especially sus2 chords, which sound open rather than tense. Many intros and verses sit on a sus2 chord for bars at a time. A sus4 left unresolved sounds more unfinished, so it works best as a passing colour.