Guitar Chord A#sus2: Structure, Notes and Theory

A#sus2 — a chord built on the note “A#” 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 A#sus2 Chord

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

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

Together, these notes form the harmonic foundation of the A#sus2 chord, defining its sound and role in the musical context.

Alternative Names for the A#sus2 Chord

There are no alternative names for this chord.

Using the A#sus2 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

A#sus2 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.