Chord sequence

Cm7b5, F7alt, Bbm7, Eb7, Abmaj7

Cm7♭5 F7alt B♭m7 E♭7 A♭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

Cm7b5
F7alt
Bbm7
Eb7
Abmaj7

Analysis

Heard in Ab major

Each chord's roman numeral and role in Ab major
Chord	Numeral	Role
Cm7♭5	iiø7/ii	ii of the ii-V to ii
F7alt	V7alt/ii	Secondary dominant of ii
B♭m7	ii7	Subdominant
E♭7	V7	Dominant
A♭maj7	Imaj7	Tonic

Progressions in these changes

All the chords

Minor ii-V to ii-V-I Progression in Ab

A minor ii-V aimed at the ii chord, then the ii-V-I: the ii is approached as if it were a key of its own.

Scales to play