Cyclic mass
（重定向自Cantus firmus mass）
In Renaissance music, the cyclic mass was a setting of the Ordinary of the Roman Catholic Mass, in which each of the movements – Kyrie, Gloria, Credo, Sanctus, and Agnus Dei – shared a common musical theme, commonly a cantus firmus, thus making it a unified whole. The cyclic mass was the first multi-movement form in western music to be subject to a single organizing principle.