Chords
Gb Major seventh
Gb · Bb · Db · F
The major seventh chord — a major triad with a major seventh. Lush, settled, and unmistakably modern.
Also written GbΔ · GbΔ7 · Gb△ · Gb△7 · Gbma7 · GbM7 · GbMaj7 · Gb^7
Gb Major seventh
Gb · Bb · Db · F
Voicings on the piano
| Voicing | Notes | Play it on your instrument |
|---|---|---|
| Closed, root position | Gb3 · Bb3 · Db4 · F4 | |
| Open (drop 2) | Db3 · Gb3 · Bb3 · F4 | |
| Shell | Gb3 · Bb3 · F4 | |
| Rootless | Bb3 · Db4 · F4 · Ab4 |
Tap a key or a fret to hear it.
Anatomy
Gb Major seventh (Gbmaj7) contains the notes Gb · Bb · Db · F, each with a role measured as an interval from the root.
Read on: how triads are built · seventh chords
Inversions
An inversion of Gb Major seventh puts a chord tone other than Gb in the bass; the name after the slash is that bass note.
Where it lives
The keys and the scales Gb Major seventh belongs to.
In which keys
Gb Major seventh is diatonic to 4 keys; the numeral is its degree and the label its harmonic function.
Scales that contain it
Gb Major seventh fits inside these scales, each built on Gb.
- Gb MajorGb · Ab · Bb · Cb · Db · Eb · F
- Gb LydianGb · Ab · Bb · C · Db · Eb · F
- Gb Ionian PentatonicGb · Bb · Cb · Db · F
- Gb Lydian PentatonicGb · Bb · C · Db · F
- Gb AugmentedGb · A · Bb · Db · D · F
- Gb Augmented HeptatonicGb · A · Bb · Cb · Db · D · F
- Gb Lydian #9Gb · A · Bb · C · Db · Eb · F
- Gb BebopGb · Ab · Bb · Cb · Db · Eb · Fb · F
Understanding the Gb Major seventh chord
Names and symbols
Gbmaj7 is the chord symbol for Gb Major seventh; it is also written GbΔ, GbΔ7, Gb△, Gb△7, Gbma7, GbM7, GbMaj7, Gb^7.
maj7, M7, Δ7, ma7 and ^7 all mean the major seventh. A lowercase m7 is a different chord, the minor seventh, so the capital letter and the triangle are the only things keeping the two apart on a chart.
Gb Major seventh and F# Major seventh are the same sound spelled two ways; both have a page here, and each links to the other. F# Major seventh
How it is built
On Gb it is Gb · Bb · Db · F, stacking 1P · 3M · 5P · 7M. The seventh sits one semitone below the octave, which is a sharp dissonance in isolation and pure colour once the third and fifth sit between them.
How it is used
Unlike the dominant seventh it contains no tritone, so it does not demand resolution. That is why it works as a resting chord — the I of a jazz standard, the tonic of a bossa nova, the final chord that sounds finished without sounding plain.
It is the sound of bossa nova, neo-soul and a great deal of film romance. Put it on the IV as well as the I and you have most of what makes a progression sound sophisticated rather than folk.
Learn this properly
Chapter 10: Chords: Triads and SeventhsCommon questions
- What notes are in Gbmaj7?
- Gbmaj7 contains Gb · Bb · Db · F. Name any set of notes with the chord identifier.
- What is the difference between Gbmaj7 and a dominant seventh on the same root?
- The seventh. A major seventh is eleven semitones above the root; a dominant seventh is ten. That one semitone is the difference between resting and resolving.
- Why does a maj7 sound jazzy?
- It adds colour without demanding resolution, so a progression can sit on it. That combination of richness and stability is central to the jazz and bossa vocabulary.
- What notes are in the Gb Major seventh chord?
- The Gb Major seventh chord contains the notes Gb · Bb · Db · F: the root Gb with the intervals 1P, 3M, 5P, 7M stacked above it. Play them together for the chord or one after another for an arpeggio. The lowest note is normally Gb, but any chord tone can take the bass in an inversion.
- What intervals make up the Gb Major seventh chord?
- Measured from Gb, the Gb Major seventh chord stacks the intervals 1P, 3M, 5P, 7M. The quality of the third and of the seventh, if there is one, is what gives the chord its character; the rest of the notes colour it. Every interval in the formula links to its own page, with its sound.