Chord sequence

Bbm7, Gm7b5, Cm7b5, F7alt

B♭m7 Gm7♭5 Cm7♭5 F7alt

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

Bbm7
Gm7b5
Cm7b5
F7alt

Analysis

Heard in Bb minor

Each chord's roman numeral and role in Bb minor
Chord	Numeral	Role
B♭m7	i7	Tonic
Gm7♭5	viø7	Diatonic
Cm7♭5	iiø7	Subdominant
F7alt	V7alt	Dominant

Progressions in these changes

All the chords

Minor i-vi-ii-V Progression in Bb

The I-vi-ii-V of a minor key: the minor i, a half-diminished vi and ii, and an altered V.

Scales to play