Construction
A Major 7♯11 = Root + Major 3rd + Diminished 5th + Perfect 5th + Major 7th = A, C♯, D♯, E, G♯
| Note | Interval | Degree |
|---|---|---|
| A | Root | 1 |
| C♯ | Major 3rd | 3 |
| D♯ | Diminished 5th | ♭5 |
| E | Perfect 5th | 5 |
| G♯ | Major 7th | 7 |
Fingering
| Note | Key color | Right hand | Left hand |
|---|---|---|---|
| A | white | thumb (1) | little finger (5) |
| C♯ | black | index finger (2) | ring finger (4) |
| D♯ | black | middle finger (3) | middle finger (3) |
| E | white | ring finger (4) | index finger (2) |
| G♯ | black | little finger (5) | thumb (1) |
Right hand: thumb (1) on A, index finger (2) on C♯, middle finger (3) on D♯, ring finger (4) on E, little finger (5) on G♯.
Left hand: little finger (5) on A, ring finger (4) on C♯, middle finger (3) on D♯, index finger (2) on E, thumb (1) on G♯.
Key Signature
A chord has no key signature of its own, but the A Major 7♯11 is the tonic (I) chord of A Major, whose key signature has 3 sharps (F♯, C♯, G♯).
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 triads built on each degree of A Major:
A Major 7♯11 : Frequently Asked Questions
What is the A Major 7♯11 chord on piano?
The A Major 7♯11 chord contains the notes A – C♯ – D♯ – E – G♯. On piano, play these notes together to sound the chord.