Chord sequence

C#m7b5, C7#11, Bm7, Bb7, Amaj7

C♯m7♭5 C7♯11 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

C#m7b5
C7#11
Bm7
Bb7
Amaj7

Analysis

Heard in A major

Each chord's roman numeral and role in A major
Chord	Numeral	Role
C♯m7♭5	?	Outside the key (iiiø7)
C7♯11	subV7♯11/ii	Tritone substitute for V7/ii
Bm7	ii7	Subdominant
B♭7	subV7	Tritone substitute for V7
Amaj7	Imaj7	Tonic

Progressions in these changes

Chords 3 to 5

Tritone Sub ii-V-I Progression in A

Bm7 Bb7 Amaj7

Scales to play