Guitar Chord A5: Structure, Notes and Theory

A5 — a chord built on the note “A” with a powerful, focused sound without a strong modal quality. Perfect for riffs, rock tunes, and overdriven playing. Cuts through the mix well and stays solid in drop tunings.

Formula and Structure of the A5 Chord

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

• A — unison and the main tonal anchor.
• E — perfect fifth, stabilizing the triad and adding tonal grounding.

Together, these notes form the harmonic foundation of the A5 chord, defining its sound and role in the musical context.

Alternative Names for the A5 Chord

There are no alternative names for this chord.

Using the A5 Chord

Double the fifth at the octave for power. Experiment with bass movement while keeping the top fixed — this creates a tight, unified riff. In fast rhythms and with distortion, you can slightly mute the fifth with the picking hand for attack.

Conclusion

A5 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.