Chord sequence

Bb7, Eb7, Ab7, Db7, Gbmaj7

B♭7 E♭7 A♭7 D♭7 G♭maj7

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

Bb7
Eb7
Ab7
Db7
Gbmaj7

Analysis

Heard in Gb major

Each chord's roman numeral and role in Gb major
Chord	Numeral	Role
B♭7	V7/VI	Secondary dominant of VI
E♭7	V7/II	Secondary dominant of II
A♭7	V7/V	Secondary dominant of V
D♭7	V7	Dominant
G♭maj7	Imaj7	Tonic

Progressions in these changes

All the chords

Cycle of Dominants in Gb

Dominant 7th chords around the cycle of fifths, each the V of the next, from III7 to V7 and home to I.

Scales to play