G♯ Lydian — 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 1G♯·C𝄪·F𝄪
Degree 2 · II(4)A#(4)
Degree 3 · III(4)B#(4)
Degree 4 · IV(4)C##(4)
Degree 5 · Degree 5D♯·G♯·C𝄪
Degree 6 · VI(4)E#(4)
Degree 7 · VII(4)F##(4)