Liturgy “is the summit toward which the activity of the Church is directed; at the same time it is the font from which all her power flows” (SC 10). Because of that, it is said that liturgy is in the very heart of the Church life that continuously adds to the living tradition. It is an apostolic heritage that is continuously being transmitted. The Department of Liturgics engages in the historical study of various liturgical institutions and liturgical symbols, in discovery of what Christ and apostles constituted, as well as what has been added throughout centuries, according to the needs and specific demands of certain time periods. It also engages in the historical study of the emergence and development of Gregorian singing in liturgy of the Roman-Latin Rite, the study of Church documents on music, the evaluation of musical-aesthetical value of various types of music forms in liturgical music, the acquisition of knowledge on the emergence and development of the liturgical year, liturgical spaces, the Breviary, and the current structure – while always relying on theological postulates.