Gmaj7, Abdim7, Am7, Ab7 in G

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 G major

Each chord's roman numeral and role in G major
Chord	Numeral	Role
Gmaj7	Imaj7	Tonic
A♭dim7	♭ii°7	Passing diminished, rising to ii
Am7	ii7	Subdominant
A♭7	subV7	Tritone substitute for V7