Chord sequence

Gbm7, Gm7, Gbm7

G♭m7 Gm7 G♭m7

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
Gm7
Gbm7

Analysis

Heard in Gb minor

Each chord's roman numeral and role in Gb minor
Chord	Numeral	Role
G♭m7	i7	Tonic
Gm7	?	Outside the key (bii7)
G♭m7	i7	Tonic

Progressions in these changes

All the chords

Modal AABA in Gb

A 32-bar AABA form with one minor 7th chord to each section: eight bars of Dorian on i, and a bridge a half step higher.

Scales to play