C 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 1C·F♭·B♭

Degree 2 · Degree 2D♭·G♭·C

Degree 3 · III(4)Eb(4)

Degree 4 · Degree 4F♭·B♭·E♭

Degree 5 · Degree 5G♭·C·F♭

Degree 6 · VI(4)Ab(4)

Degree 7 · VII(4)Bb(4)

Open in inversion explorer

Degree 1 · C·F♭·B♭Degree 2 · D♭·G♭·C III(4) · Eb(4)Degree 4 · F♭·B♭·E♭Degree 5 · G♭·C·F♭VI(4) · Ab(4)VII(4) · Bb(4)