ABSTRACT
The terms crusis, metacrusis, and anacrusis are used in two contexts: to assign a name to individual beats in a measure and to describe the three parts of a phrase. The first beat of a measure is the crusis, the last beat is the anacrusis, and any remaining beats, the metacruses (or, singular, metacrusis). A phrase is crusic if it begins on the first beat of a measure; it is anacrusic if it begins on any other beat or partial of the beat.
