← B♯ Melodic Minor on Viola (treble clef)
B♯ 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 1B♯·E♯·A𝄪
Degree 2 · II(4)C##(4)
Degree 3 · Degree 3D♯·G𝄪·C𝄪
Degree 4 · Degree 4E♯·A𝄪·D♯
Degree 5 · V(4)F##(4)
Degree 6 · VI(4)G##(4)
Degree 7 · Degree 7A𝄪·D♯·G𝄪