Chord sequence

Ebmaj7, Gb7, Fm7, E7

E♭maj7 G♭7 Fm7 E7

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

Ebmaj7
Gb7
Fm7
E7

Analysis

Heard in Eb major

Each chord's roman numeral and role in Eb major
Chord	Numeral	Role
E♭maj7	Imaj7	Tonic
G♭7	subV7/ii	Tritone substitute for V7/ii
Fm7	ii7	Subdominant
E7	subV7	Tritone substitute for V7

Progressions in these changes

All the chords

Tritone Sub Turnaround in Eb

The I-VI-ii-V with tritone substitutes for its dominants, bIII7 for VI7 and bII7 for V7, so the bass falls by half steps from bIII back to I.

Scales to play