Chord sequence

Gbm7, Ebm7b5, Abm7b5, Db7alt

G♭m7 E♭m7♭5 A♭m7♭5 D♭7alt

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

Gbm7
Ebm7b5
Abm7b5
Db7alt

Analysis

Heard in Gb minor

Each chord's roman numeral and role in Gb minor
Chord	Numeral	Role
G♭m7	i7	Tonic
E♭m7♭5	viø7	Diatonic
A♭m7♭5	iiø7	Subdominant
D♭7alt	V7alt	Dominant

Progressions in these changes

All the chords

Minor i-vi-ii-V Progression in Gb

The I-vi-ii-V of a minor key: the minor i, a half-diminished vi and ii, and an altered V.

Scales to play