Chord sequence

A7, D7, A7, D7, A7, Bm7, E7, A7, E7

A7 D7 A7 D7 A7 Bm7 E7 A7 E7

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

A7
D7
A7
D7
A7
Bm7
E7
A7
E7

Analysis

Heard in A major

Each chord's roman numeral and role in A major
Chord	Numeral	Role
A7	V7/IV	Secondary dominant of IV
D7	IV7	Blues dominant
A7	V7/IV	Secondary dominant of IV
D7	IV7	Blues dominant
A7	I7	Blues dominant
Bm7	ii7	Subdominant
E7	V7	Dominant
A7	I7	Blues dominant
E7	V7	Dominant

Progressions in these changes

All the chords

Blues with ii-V in A

The basic blues with a ii-V in bars 9 and 10 in place of V-IV, and a V7 turnaround in the last bar.
Chords 6 to 7

Major ii-V Progression in A

Bm7 E7

Scales to play