Fm7, Bb7, Bdim7, Cmaj7

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 C major

Each chord's roman numeral and role in C major
Chord	Numeral	Role
Fm7	iv7	Borrowed from C minor
B♭7	♭VII7	Borrowed from C minor
Bdim7	vii°7	Passing diminished, rising to I
Cmaj7	Imaj7	Tonic