Chord sequence

Fbmaj7, Gmaj7, Cmaj7, Fmaj7

F♭maj7 Gmaj7 Cmaj7 Fmaj7

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 Fb major

Each chord's roman numeral and role in Fb major
Chord Numeral Role
F♭maj7 Imaj7 Tonic
Gmaj7 ♭IIImaj7 Borrowed from Fb minor
Cmaj7 ♭VImaj7 Borrowed from Fb minor
Fmaj7 ♭IImaj7 Borrowed from Fb minor

Progressions in these changes

Scales to play