Cm7b5, F7alt, Dbm7, Gb7, Abmaj7 in Ab

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

Analysis

Heard in Ab major

Each chord's roman numeral and role in Ab major
Chord	Numeral	Role
Cm7♭5	iiiø7	ii of the ii-V to F7alt
F7alt	V7alt/ii	Secondary dominant, unresolved
D♭m7	iv7	Borrowed from Ab minor
G♭7	♭VII7	Borrowed from Ab minor
A♭maj7	Imaj7	Tonic