The G♭ Major 7♯11 chord is a five-note chord made up of G♭, B♭, C, D♭, and F.
Construction
G♭ Major 7♯11 = Root + Major 3rd + Diminished 5th + Perfect 5th + Major 7th = G♭ · B♭ · C · D♭ · F
| Note | Interval | Degree |
|---|---|---|
| G♭ | Root | 1 |
| B♭ | Major 3rd | 3 |
| C | Diminished 5th | ♭5 |
| D♭ | Perfect 5th | 5 |
| F | Major 7th | 7 |
Key Signature
A chord has no key signature of its own, but the G♭ Major 7♯11 is the tonic (I) chord of Gb Major, whose key signature has 6 flats (B♭, E♭, A♭, D♭, G♭, C♭).
B♭E♭A♭D♭G♭C♭
Order of flats
Flats are added in a fixed order — the reverse of the sharp order. Each new flat key adds the next flat on the list.
B♭E♭A♭D♭G♭C♭F♭
Mnemonic: Battle Ends And Down Goes Charles’ Father
Chords in the Key of G♭ Major
These are the triads built on each degree of the G♭ major scale:
G♭ Major 7♯11 — Frequently Asked Questions
What is the G♭ Major 7♯11 chord on piano?
The G♭ Major 7♯11 chord contains the notes G♭ – B♭ – C – D♭ – F. On piano, play these notes together to sound the chord.