← A Melodic Minor on French Horn
A Melodic Minor — Quartal voicings
Three-note stacks of fourths, one per scale degree — the open, ambiguous voicing-flavour McCoy Tyner and Bill Evans built modal-era jazz around (the 'So What' chord).
All 7 quartal voicings in sequence
Degree 1 · Degree 1A·D·G♯
Degree 2 · II(4)B(4)
Degree 3 · Degree 3C·F♯·B
Degree 4 · Degree 4D·G♯·C
Degree 5 · V(4)E(4)
Degree 6 · VI(4)F#(4)
Degree 7 · Degree 7G♯·C·F♯