Chord sequence

Db7, Gb7, Cb7, G7, Amaj7

D♭7 G♭7 C♭7 G7 Amaj7

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 Gb major

Each chord's roman numeral and role in Gb major
Chord Numeral Role
D♭7 V7 Dominant
G♭7 V7/IV Secondary dominant of IV
C♭7 IV7 Blues dominant
G7 ? Outside the key (bII7)
Amaj7 ♭IIImaj7 Borrowed from Gb minor

Scales to play