Dm7, G7, Dbm7, Gb7, Ebm7, Ab7, Bbmaj7 in Bb

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 Bb major

Each chord's roman numeral and role in Bb major
Chord	Numeral	Role
Dm7	iii7	Diatonic
G7	V7/ii	Secondary dominant, unresolved
D♭m7	♭iii7	ii of the ii-V to Gb7
G♭7	♭VI7	Borrowed from Bb minor
E♭m7	iv7	Borrowed from Bb minor
A♭7	♭VII7	Borrowed from Bb minor
B♭maj7	Imaj7	Tonic