Am7, D7, Ebdim7, Fbmaj7 in Fb

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

Analysis

Heard in Fb major

Each chord's roman numeral and role in Fb major
Chord	Numeral	Role
Am7	iv7	Borrowed from Fb minor
D7	♭VII7	Borrowed from Fb minor
E♭dim7	vii°7	Passing diminished, rising to I
F♭maj7	Imaj7	Tonic