Chord sequence

Bbm7, Eb7, Abm7, Db7

B♭m7 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

Bbm7
Eb7
Abm7
Db7

Analysis

Heard in Gb major

Each chord's roman numeral and role in Gb major
Chord	Numeral	Role
B♭m7	iii7	Diatonic
E♭7	V7/ii	Secondary dominant of ii
A♭m7	ii7	Subdominant
D♭7	V7	Dominant

Progressions in these changes

All the chords

Major iii-VI-ii-V Progression in Gb

The I-VI-ii-V turnaround with iii, which shares three notes with the I chord, standing in for the tonic.

Scales to play