As the vi degree in major, a minor chord can move to IV or ii, creating subdominant motion.
Features
Character
Minor, with diminished 5th and major 7th
Characteristic interval
Minor third (m3), Diminished 5th (b5), Major 7th (M7)
Description
The minor 3rd defines minor quality, the diminished 5th forms a tritone with the root, and the major 7th lies a semitone below the octave. The two dissonances make the chord sharply unstable.
Application
Experimental harmony
Film scoring
Passing chord
Voicing & structure
Root position
v1F(F4)Bass
root
v2Ab(Ab4)m3from F
v3Cb(Cb4)m3from Ab
v4E(E5)P4from Cb
Harmony
Compatible scales
All chord tones are contained in these scales — use them for improvisation.