Chord sequence

Em7, Eb7, Dm7, Db7

Em7 E♭7 Dm7 D♭7

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

Em7
Eb7
Dm7
Db7

Analysis

Heard in C major

Each chord's roman numeral and role in C major
Chord	Numeral	Role
Em7	iii7	Diatonic
E♭7	subV7/ii	Tritone substitute for V7/ii
Dm7	ii7	Subdominant
D♭7	?	Outside the key (bII7)

Progressions in these changes

All the chords

Chromatic iii-bIII-ii-bII Progression in C

The iii-VI-ii-V turnaround with both dominants replaced by tritone substitutes, so the roots descend by half steps from iii to I.

Scales to play