Chord sequence

G7, C7, G7, C7, G7, Am7, Ab7, G7, Ab7

G7 C7 G7 C7 G7 Am7 A♭7 G7 A♭7

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

G7
C7
G7
C7
G7
Am7
Ab7
G7
Ab7

Analysis

Heard in G major

Each chord's roman numeral and role in G major
Chord	Numeral	Role
G7	V7/IV	Secondary dominant of IV
C7	IV7	Blues dominant
G7	V7/IV	Secondary dominant of IV
C7	IV7	Blues dominant
G7	I7	Blues dominant
Am7	ii7	Subdominant
A♭7	subV7	Tritone substitute for V7
G7	I7	Blues dominant
A♭7	subV7	Tritone substitute for V7

Scales to play