Guitar Chord Csus2: Structure, Notes and Theory

Csus2 — a chord built on the note “C” with an open, bright tone that creates a sense of space. Sits perfectly on clean guitar tone, and works for pop, indie, and acoustic styles.

Formula and Structure of the Csus2 Chord

Interval formula from the root note: 1 — 2 — 5. The chord consists of the following notes:

• C — unison and the main tonal anchor.
• D — major second with a soft upper color, expanding the melody.
• G — perfect fifth, stabilizing the triad and adding tonal grounding.

Together, these notes form the harmonic foundation of the Csus2 chord, defining its sound and role in the musical context.

Alternative Names for the Csus2 Chord

There are no alternative names for this chord.

Using the Csus2 Chord

Keep the 2 in the top voice to maintain an open, bright character. Alternating with major and minor triads gives a “breathing” effect. Can be used in picking patterns with open strings for added depth.

Conclusion

Csus2 is an expressive and versatile chord. Learn several fingerings, experiment with different positions and voice spacing, then try weaving it into your own playing — this will help you quickly find your unique tone.