Chord sequence

Bm7, Bb7, Amaj7

Bm7 B♭7 Amaj7

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

Bm7
Bb7
Amaj7

Analysis

Heard in A major

Each chord's roman numeral and role in A major
Chord	Numeral	Role
Bm7	ii7	Subdominant
B♭7	subV7	Tritone substitute for V7
Amaj7	Imaj7	Tonic

Progressions in these changes

All the chords

Tritone Sub ii-V-I Progression in A

The ii-V-I with a tritone substitute: bII7 in place of V7, so the bass falls by half steps from ii to I.

Scales to play