F♯ 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 1F♯·B·E♯
Degree 2 · II(4)G#(4)
Degree 3 · Degree 3A·D♯·G♯
Degree 4 · Degree 4B·E♯·A
Degree 5 · V(4)C#(4)
Degree 6 · VI(4)D#(4)
Degree 7 · Degree 7E♯·A·D♯