A Chord on Guitar
A = A – C# – E (Root, Major 3rd, Perfect 5th)
A major's open voicing packs three notes onto a single fret: X-0-2-2-2-0, with three fingers lined up side by side across the second fret of the D, G and B strings, the low E muted, the A string open as the root, and the high e open on top. Because three fingers have to squeeze onto one narrow fret, this chord has its own well-known technical challenge distinct from F major's barre problem — it's not about strength but about fitting three fingertips into a tight horizontal space.
A major has a bright, slightly compressed character that sits between the fullness of E major and the thinner ring of D major — its open A-string root gives it decent low presence without the full six-string weight of E. Home in its own three-sharp key, it does equally central work as E major's fourth-degree chord and D major's dominant, making A-D-E one of the guitar's other foundational chord triangles alongside G-C-D. Its position right next to E and D on the neck (in terms of shared open strings) also makes A a natural pivot chord in songs that move fluidly between all three keys, which is part of why so much of the guitar's earliest folk and blues repertoire lives almost entirely within this A-D-E neighborhood. That shared open-string relationship is also why so much of the guitar's earliest recorded folk and blues repertoire clusters tightly around these three keys, long before more chromatic, barre-heavy playing became common.
Fingerings
Open Position
How to Practice It
The classic fix for the three-finger squeeze is switching to a partial barre with the ring finger flattened across the D, G and B strings' second fret instead of three separate fingers, freeing the index and middle fingers for quick decorations or an easier grip overall — many experienced players use this variant by default. Whichever fingering is used, keep the fingertips as vertical and narrow as possible rather than letting them splay, and confirm the open high e string isn't accidentally muted by a finger leaning too far over, a very common issue given how crowded the second fret gets. Practice releasing the three-finger squeeze between strums rather than holding it clamped the entire time, since relaxing between hits reduces fatigue over a long song and is closer to how experienced players actually manage the shape. Once the three-finger squeeze feels secure, try lifting all three fingers together and replanting them as a single unit, which builds the coordinated multi-finger motion needed for fast A-major chord changes in an up-tempo strumming pattern. Finish a practice session by switching slowly from A to D and back several times, since that specific transition — losing the low E's mute on one chord and regaining it on the other — is one of the most common places beginners lose their strumming rhythm.
Common Progressions
- I–IV–V in A major: A – D – E
- I–vi–IV–V in A major: A – F#m – D – E
- V chord in D major: A – D
FAQ
- Why is A major hard even though it's an open chord?
- Its difficulty isn't about strength or reach the way F major's barre is — it's about fitting three separate fingertips side by side onto the same narrow fret without them bumping into each other or muting adjacent strings, a genuinely fiddly bit of finger control.
- What's an easier alternative fingering for A major?
- Flattening the ring finger across the D, G and B strings' second fret as a small partial barre, instead of using three separate fingers, is a very common and fully correct simplification that many advanced players prefer even after mastering the three-finger version.
- How does A major relate to E and D major on the neck?
- Together they form the A-D-E chord triangle (I-IV-V in the key of A), the guitar's second most foundational three-chord grouping after G-C-D, and songs frequently pivot between the keys of A, D and E precisely because all three share such guitar-friendly open chords.
- Why do so many blues songs use the key of A?
- A major's open-string relationship to both E and D makes it easy to build blues turnarounds and dominant-seventh voicings around, and its slightly brighter, more compressed tone compared to E also suits the higher vocal ranges common in a lot of blues and blues-rock singing.
A on other instruments: A on Piano, A on Ukulele. Related: how chords are built, chord finder.