The G 7♭5 chord is a four-note chord made up of G, B, D♭, and F. It is built from a root, major third, diminished fifth, and minor seventh.
Construction
G 7♭5 = Root + Major 3rd + Diminished 5th + Minor 7th = G · B · D♭ · F
| Note | Interval | Degree |
|---|---|---|
| G | Root | 1 |
| B | Major 3rd | 3 |
| D♭ | Diminished 5th | ♭5 |
| F | Minor 7th | ♭7 |
G 7♭5 Inversions
| Position | Notes |
|---|---|
| Root Position | G – B – D♭ – F |
| 1st Inversion | B – D♭ – F – G |
| 2nd Inversion | D♭ – F – G – B |
| 3rd Inversion | F – G – B – D♭ |
Key Signature
A chord has no key signature of its own, but the G 7♭5 is the tonic (I) chord of G Major, whose key signature has 1 sharp (F♯).
F♯
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 G Major
These are the triads built on each degree of the G major scale:
Same Notes, Other Names
The notes G – B – D♭ – F aren’t exclusive to this chord. Depending on which note is the bass and how the chord functions, the same pitches also spell:
G 7♭5 — Frequently Asked Questions
What is the G 7♭5 chord on piano?
The G 7♭5 chord contains the notes G – B – D♭ – F. On piano, play these notes together to sound the chord.
What notes are in the G 7♭5 chord?
The G 7♭5 chord (G7♭5) contains 4 notes: G, B, Db, F. Formula: R-M3-d5-m7.
How is G7♭5 used in music?
G7♭5 is used in jazz, fusion, and contemporary music to add harmonic color. It appears as a dominant or tonic chord depending on context.
What is the scale degree formula for G7♭5?
G7♭5 uses scale degrees 1-3-b5-b7, giving it its distinctive sound.