Introduction

A Major on the piano — Notes: A – C♯ – E — A Major chord on the piano

The A Major chord is a three-note chord made up of A, C♯, and E. It is built from a root, major third, and perfect fifth.

The A major piano chord is a major triad built on A and consists of three notes: A, C#, and E. It comes from the A Major scale (A, B, C#, D, E, F#, and G#) and is formed using the 1st, 3rd, and 5th scale degrees. The A Major chord contains three sharps. Like all major chords, it has a bright, stable sound created by the interval structure of a major third (4 semitones) and a perfect fifth (7 semitones) above the root.

Notes

Notes:A – C♯ – E

How to Play the A Major

Right Hand (RH)

Place your right hand over the keys with the thumb on the root. Use the fingering: 1 – 3 – 5

Left Hand (LH)

For the left hand, start with your pinky on the root. Use the fingering: 5 – 3 – 1

A Major Inversions

A Major — first inversion on the piano — A Major — first inversion

A Major — second inversion on the piano — A Major — second inversion

Position	Notes
Root Position	A – C# – E
1st Inversion	C# – E – A
2nd Inversion	E – A – C#

Key Signature

The key of A Major has 3 sharps.

F♯C♯G♯

Order of sharps

Sharps are added to a key signature in a fixed order. Each new sharp key adds the next sharp on the list.

F♯C♯G♯D♯A♯E♯B♯

Mnemonic: Father Charles Goes Down And Ends Battle

Chords in the Key of A Major

These are the diatonic triads built on each degree of the A major scale:

C

D

E

F

G

A

B

C

D

E

F

G

A

B

I — A Major (major)

Degree	Numeral	Chord	Quality
1	I	A Major	Major
2	ii	B Minor	Minor
3	iii	C# Minor	Minor
4	IV	D Major	Major
5	V	E Major	Major
6	vi	F# Minor	Minor
7	vii°	G# Diminished	Diminished

Related Chords

Parallel Minor:A Minor

Relative Minor:F# Minor

Dominant (V):E Major

Subdominant (IV):D Major

Theory: Intervals

Formula: R-M3-P5

Intervals: P1-M3-P5

The A Major is built by stacking intervals from the root note. The formula R-M3-P5 describes the scale degrees used. The intervals P1-M3-P5 show the distance between each note in the chord.

A Major — Frequently Asked Questions

What notes make up the A Major chord?

A Major contains three notes: A (root), C# (major third), and E (perfect fifth). C# is a black key, giving A Major a single black-key reach between two white notes.

What fingering do I use for A Major?

Right hand: finger 1 on A, finger 3 on C#, finger 5 on E. Left hand: finger 5 on A, finger 3 on C#, finger 1 on E. The middle finger arches up to C# while the thumb and pinky rest on white keys A and E.

What are the inversions of A Major?

First inversion (A/C#): C#–E–A. Second inversion (A/E): E–A–C#. A/C# in the bass allows for a smooth descending bass line movement from A through G# (if using G#/Ab) down to F#m, a very common jazz and pop device.

What songs use the A Major chord?

A Major appears in hundreds of classic songs. It is the tonic in Don't Stop Me Now (Queen), the I chord in countless country tracks, and the V chord in D major songs. Wonderwall (Oasis) uses A as part of its signature four-chord sequence.

What chords pair well with A Major?

In the key of A: D Major (IV), E Major (V), and F# minor (vi). A–D–E is the classic three-chord rock sequence. A–E–F#m–D is one of the most common pop progressions of the 21st century.

How does C# affect the sound and feel of A Major?

C# is only four semitones above A (a major third), which is what gives A Major its bright, resolved quality. Without C# — using C natural instead — you would have A minor, which sounds darker and more melancholic. The single black-key difference has an enormous effect on mood.

Practice Tips

Find C# before placing your other fingers — it is the black key immediately to the right of C, the first black key after C in the C–D group.
Arch your middle finger clearly: if it flattens, it may accidentally mute E or A beside it.
Practice A → D → E → A as the foundational three-chord loop in the key of A.
Work on A → E → F#m → D (I–V–vi–IV in A) — this is one of the most commercially successful chord progressions ever.
Add vibrato feel: try playing A Major as broken chord — A then C# then E — arpeggiated upward and back down.

Explore More

Major Chord in Other Keys

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

Parent Scale

A Major Scale

Browse all Major Chords →All A Chords →Learn about triads →

Related Lessons

Keep going with the Major chord — these pages cover the underlying theory, the connected reference material, and the practice tools that work with this chord.

A Major