F♯ Altered — 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 · Degree 2G·C·F♯
Degree 3 · III(4)A(4)
Degree 4 · Degree 4B♭·E·A
Degree 5 · Degree 5C·F♯·B♭
Degree 6 · VI(4)D(4)
Degree 7 · VII(4)E(4)