Chord sequence

Bbm7, Gbm7, B7, Emaj7, Dm7, G7, Cmaj7, Bbm7, Eb7, Abmaj7

B♭m7 G♭m7 B7 Emaj7 Dm7 G7 Cmaj7 B♭m7 E♭7 A♭maj7

120 BPM
Voicing family

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 Ab major

Each chord's roman numeral and role in Ab major
Chord Numeral Role
B♭m7 ii7 Subdominant
G♭m7 ii7/♭VI ii of the ii-V to bVI
B7 V7/♭VI Secondary dominant of bVI
Emaj7 ♭VImaj7 Borrowed from Ab minor
Dm7 ii7/III ii of the ii-V to III
G7 V7/III Secondary dominant of III
Cmaj7 ? Outside the key (IIImaj7)
B♭m7 ii7 Subdominant
E♭7 V7 Dominant
A♭maj7 Imaj7 Tonic

Progressions in these changes

Scales to play