Chord sequence

Gbmaj7, Eb7, Abm7, Db7

G♭maj7 E♭7 A♭m7 D♭7

Tempo 120 BPM

Rootless Shells Guide tones Rooted shells Rooted Drop 2

Four-note rootless voicings in their two forms, with the 3rd or the 7th on the bottom, played over the root.

Customize each chord

Gbmaj7
Eb7
Abm7
Db7

Analysis

Heard in Gb major

Each chord's roman numeral and role in Gb major
Chord	Numeral	Role
G♭maj7	Imaj7	Tonic
E♭7	V7/ii	Secondary dominant of ii
A♭m7	ii7	Subdominant
D♭7	V7	Dominant

Progressions in these changes

All the chords

Major I-VI-ii-V Progression in Gb

The standard turnaround back to the top of a major tune, with VI7, the dominant of ii, in place of the diatonic vi chord.

Scales to play