Chord sequence

Gbm7, Cb7

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
Cb7

Analysis

Heard in Fb major

Each chord's roman numeral and role in Fb major
Chord	Numeral	Role
G♭m7	ii7	Subdominant
C♭7	V7	Dominant

Progressions in these changes

All the chords

Major ii-V Progression in Fb

The building block of jazz harmony: a minor 7th chord on the 2nd degree moving up a fourth to the dominant 7th on the 5th.
All the chords

i-IV Vamp in Gb

A two-chord vamp of a minor 7th on i and a dominant 7th on IV, both from one Dorian scale.

Scales to play