The liturgical language used by the medieval Christian church was Latin.
The Liturgical Year, with its structure of seasons and feast days, evolved over centuries starting in the early Christian church. It was influenced by both Jewish and Roman calendars and was gradually formalized by various church councils and liturgical reforms. The basic framework of the Liturgical Year was established by the medieval period.
Leo F. Stelten has written: 'Dictionary of ecclesiastical Latin' -- subject(s): Bible, Catholic Church, Church Latin, Dictionaries, Latin, Latin language, Liturgical language, Liturgy, Medieval and modern Latin language, Postclassical Latin language
Plane or Gregorian chant.
Liturgical drama is closely connected to medieval drama as it emerged from the religious rituals and ceremonies of the Christian church during the Middle Ages. These early performances, often based on biblical stories and saints' lives, were initially incorporated into church services to educate and engage the congregation. Over time, liturgical dramas evolved into more elaborate forms of medieval secular drama, which began to explore a wider range of themes and characters beyond religious contexts. This transition laid the groundwork for the development of later theatrical traditions in Europe.
There were quite a few
Latin
There were no other Christian religions in medieval times. All Christian nations were Christian and still attending the Church that Christ founded.
Alexis Bugnolo has written: 'Ecclesiastical Latin grammar' -- subject(s): Latin, Grammar, Postclassical Latin language, Church Latin, Liturgy, Latin language, Bible, Language, style, Medieval and modern Latin language, Liturgical language, Catholic Church
no
Jews typically do not go to church and if they do, they would likely read Christian liturgical materials. Jews read the Torah in their synagogues.
Most plainchant was written in Latin. This language was used in liturgical practices within the Catholic Church, and plainchant served as the musical foundation for these ceremonies.
Latin