The C 7sus4 Chord Explained
C dominant seventh suspended fourth is a Suspended chord built from the notes C, F, G, and B♭. Its root is C, and its interval number formula is 1–4–5–♭7. In interval names, that gives you the root, perfect fourth, perfect fifth, and minor seventh. You may also see this chord written as C7sus4, C sus7, or plain-text spelling like C dominant seventh suspended fourth. If you look at the widget above, you can see and hear how these four notes combine, and you can learn more about chord intervals to understand why this shape has its unique sound.
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C 7sus4 Alternate Names
- C7sus4
- C sus7
- C dominant seventh suspended fourth
C 7sus4 Chord Notes
C 7sus4 Chord Formula
C 7sus4 Chord Notation
How To Use C 7sus4 In Music
Because the third is replaced by a fourth, C7sus4 sounds open, tense, and expectant rather than clearly major or minor. The added B♭ gives it a dominant pull, so it often wants to resolve to a more stable chord such as F major or back into C harmony depending on the musical setting. For example, in the key of F major, C–F–G–B♭ can function as V7sus4 in a progression like ii–V7sus4–I, such as Gm–C7sus4–F. In blues, rock, gospel, and pop, it may also appear beside C7, moving from V7sus4 to V7 before resolving to I. Its mood can feel more dramatic, soulful, or unresolved depending on the chords around it, especially when compared with a standard dominant chord.
C 7sus4 Chord Inversions
Another useful idea for beginners is inversion, which means playing the same chord with a note other than C in the bass. For C7sus4, the root position is C–F–G–B♭, while inversions could place F, G, or B♭ as the lowest note. These inversions do not change the chord’s basic identity, but they do change its color and the smoothness of movement from one chord to the next. A bass note of F can make the chord feel especially suspended, while G or B♭ in the bass can make it sound more flowing or slightly less settled. Musicians use inversions to create smoother bass lines, connect chords more naturally, and shape the mood without changing the core harmony.
