A Major Chord

Symbol: A

Diagrams

Staff Notation

Staff Notation

Piano Keyboard

A chord – keys A, C#, E highlightedPiano keyboard with keys A, C#, E highlighted. A is the root note.EAC#
A chord – keys A, C#, E highlightedPiano keyboard with keys A, C#, E highlighted. A is the root note.EAC#

Guitar (1)

Guitar chord diagram for AGuitar chord voicing with notes A, E, A, C#, E.A✕123

Guitar (2)

Guitar chord diagram for A (5fr)Guitar chord voicing with notes A, E, A, C#, E, A.A (5fr)5342

Intervals

NoteIntervalSemitones
AP10
C#M34
EP57

Related Chords (A Root)

Am Adim Aaug Asus2 Asus4 A5 A7 Amaj7 Am7 AmMaj7 Adim7 Am7b5

Major in All Keys

C Db D Eb E F F# G Ab A Bb B

Scales Containing A

Db Natural Minor Db Harmonic Minor Db Phrygian Db Aeolian Db Locrian D Major D Harmonic Minor D Melodic Minor D Ionian D Lydian Eb Locrian E Major

About the A Major Chord

The A Major chord is built from the notes A, C#, E. These notes are derived by stacking intervals above the root note A, following the interval pattern that defines every Major chord. Understanding how a chord is constructed from intervals is one of the most valuable skills in music theory, because it allows you to build the chord in any key and recognize it in any context.

You can use this chord in a variety of musical contexts. Try exploring the scales that contain these notes to discover which keys this chord naturally belongs to. Each scale listed above shares all the notes of this chord, making it a diatonic chord within that key. Understanding these relationships helps with songwriting, improvisation, and arranging.

Try A in the Chord Identifier →