Chord sequence

C7, F7, Bb7, Gb7, Abmaj7

C7 F7 B♭7 G♭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 F major

Each chord's roman numeral and role in F major
Chord Numeral Role
C7 V7 Dominant
F7 V7/IV Secondary dominant of IV
B♭7 IV7 Blues dominant
G♭7 ? Outside the key (bII7)
A♭maj7 ♭IIImaj7 Borrowed from F minor

Scales to play