Introito

Introito is a term with multiple meanings depending on the context. In music, particularly in the Roman Catholic liturgy, it refers to the opening piece sung or played at the beginning of a Mass. Historically, this was a chant sung by the choir or clergy as the priest entered the sanctuary. The introito served to unify the congregation and prepare them for the service. The specific text and music for the introito varied depending on the liturgical calendar, often reflecting the theme of the day's readings or feast.

In a broader sense, introito can also refer to an entrance or a prelude in a more general context, not strictly limited to religious services. It can denote the beginning of an event, a performance, or even a book. This usage emphasizes the initial phase or the act of entering into something. The etymology of the word comes from the Latin "introitus," meaning "entrance." Therefore, the core concept revolves around the beginning and the act of coming in. While its most prominent association is with liturgical music, understanding the broader meaning of "entrance" or "beginning" is crucial for a complete definition of introito.