Quick Answer & Harmonic Definition

To play the A Major chord on piano, press the keys A, C#, E simultaneously. In root position, A is the lowest note. First inversion places C# in the bass; second inversion uses E as the lowest note.

Piano Chord

A Piano Chord

A bright, happy triad built from a root, major third, and perfect fifth. Learn the A Major chord on piano with interactive keyboard, inversions, and audio playback.

Notes
A – C# – E
Intervals
0 – 4 – 7
Type
triad chord
A C# E
E
A
D
G
B
e
3
5
7
9
12
3 notes · Standard (E A D G B E)

Playing the A Piano Chord

The A chord is a major chord built on the root A. It contains 3 notes: A, C#, E. On piano, this chord is played by pressing these keys simultaneously or as an arpeggio.

A bright, happy triad built from a root, major third, and perfect fifth. Mastering the A chord opens up countless songs and progressions in the key of A.

Piano Finger Positions for A

For the A triad chord, use these finger positions:

  • Right hand (root position): Thumb (1) on A, middle finger (3) on C#, pinky (5) on E.
  • Left hand (root position): Pinky (5) on A, middle finger (3) on C#, thumb (1) on E.
  • Arpeggiated: Play the notes sequentially from lowest to highest for a broken triad effect.

A Chord Inversions

Inversions change the bass note while keeping the same harmonic quality:

Inversion Bass Note Notes (bottom to top) Sound
Root A A – C# – E Most stable
1st C# C# – E – A Lighter, less stable

Interval Structure of A

Degree Interval Semitones Note in A
Root Root (R) 0 A
3rd Major 3rd 4 C#
5th Perfect 5th 7 E

Common Progressions with A on Piano

  • I–IV–V–I: A – D – E – A (classic cadence)
  • I–V–vi–IV: A – E – F#m – D (pop progression)
  • ii–V–I: Bm – E – A (jazz turnaround)

Other A Piano Chords

Am
Minor
A7
Dominant 7th
Amaj7
Major 7th
Am7
Minor 7th
Adim
Diminished
Aaug
Augmented

Maior Chord in All 12 Keys

C C# D D# E F F# G G# A A# B
Virtual Piano
Interactive keyboard
A Guitar
Guitar chord shapes
A Scale
Notes that fit this chord
Songs
Find songs using A

Knowledge Base & FAQs

A Piano Chord — FAQ

Everything you need to know about our browser-based Web Audio engine, instruments, and music theory workspace.

How do I play the A chord on piano?

To play the A Major chord on piano, press the keys A, C#, E simultaneously.

In root position, A is the lowest note. First inversion places C# in the bass; second inversion uses E as the lowest note.

What are the notes in the A piano chord?

The A Major piano chord contains 3 notes: A, C#, E.

These are derived from the major interval formula applied to the root note A.

What is the best fingering for A on piano?

For the A triad in root position, use fingers 1 (thumb), 3, and 5 for a triad, or 1, 2, 3, and 5 for a triad chord.

Inversions may use 1, 2, 4 (first inversion) or 1, 3, 5 (second inversion).

What does the A chord sound like?

The A chord has a a bright, happy triad built from a root, major third, and perfect fifth.

As a major chord in the key of A, it serves as the tonic (I) chord and provides a bright, stable harmonic center.

What keys does the A chord belong to?

A is the I chord in A major, the IV chord in E major, and the V chord in D major.

What are the inversions of A on piano?

A has 2 inversions.

Root position: A–C#–E. First inversion: C#–E–A.

What chords go well with A on piano?

In the key of A major, A pairs naturally with D major (IV chord), E major (V chord), and F#m (vi chord).

The I–IV–V–I progression is a classic way to practice these.

Is A a good chord for beginners on piano?

Yes, A is a triad with 3 notes, making it accessible for beginners.

Practice playing all 3 keys simultaneously with proper finger positioning.

How do I use A in a chord progression?

A functions as the tonic (I) in A major.

A classic progression is I–IV–V–I: A–D–E–A. Practice this in both hands separately before combining.

What is the difference between A major and A minor on piano?

The A major chord (A–C#–E) uses a major third (4 semitones from root) for a bright sound.

The Am chord uses a minor third (3 semitones) for a darker, more emotional sound.