hyperaeolian mode, in either classical, Renaissance, or later phases of modal theory through the 18th century, or modern scholarship on ancient Greek musical theory and practice.

The name first came into use in modal chant theory after the 18th century, when Locrian was used to describe the newly numbered mode 11, with its final on B, ambitus from that note to the octave above, and semitones therefore between the first and second, and between the fourth and fifth degrees. Its