定てい旋せん律りつ

noun

cantus firmus; plainsong; plainchant

Music term for a pre-existing melody used as the basis of a polyphonic composition, especially in medieval and Renaissance music.

• このミサ曲きょくはグレゴリオ聖せい歌かの定てい旋せん律りつに基もとづいている。

  This mass is based on a Gregorian chant cantus firmus.