Chord sequence
Cm7♭5 F7alt B♭m6
In every key
Four-note rootless voicings in their two forms, with the 3rd or the 7th on the bottom, played over the root.
Heard in Bb minor
All the chords
The minor-key cadence, resolving to a minor 6th tonic: its major 6th comes from melodic minor, the usual scale on a minor i chord, and unlike a minor 7th it doesn't sound like another ii chord.
Over Cm7b5 · iiø7
Mode 7 of Major
Over F7alt · V7alt
Mode 7 of Melodic Minor
Over Bbm6 · i6
The melodic minor scale is similar to the major scale with only one difference - it use...