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𝄪