IncipitThe incipit (ˈɪnsɪpɪt ) of a text is the first few words of the text, employed as an identifying label. In a musical composition, an incipit is an initial sequence of notes, having the same purpose. The word incipit comes from Latin and means "it begins". Its counterpart taken from the ending of the text is the explicit. Before the development of titles, texts were often referred to by their incipits, as with for example Agnus Dei.
Gregorian chantGregorian chant is the central tradition of Western plainchant, a form of monophonic, unaccompanied sacred song in Latin (and occasionally Greek) of the Roman Catholic Church. Gregorian chant developed mainly in western and central Europe during the 9th and 10th centuries, with later additions and redactions. Although popular legend credits Pope Gregory I with inventing Gregorian chant, scholars believe that it arose from a later Carolingian synthesis of the Old Roman chant and Gallican chant.
Alexandrian liturgical ritesThe Alexandrian rites are a collection of ritual families and uses of Christian liturgy employed by three Oriental Orthodox churches (the Coptic Orthodox Church of Alexandria, the Eritrean Orthodox Tewahedo Church, and the Ethiopian Orthodox Tewahedo Church), and by three Eastern Catholic Churches (the Coptic Catholic Church, the Eritrean Catholic Church, and Ethiopian Catholic Church). The Alexandrian rite's Divine Liturgy contains elements from the liturgies of Saints Mark the Evangelist (who is traditionally regarded as the first bishop of Alexandria), Basil the Great, Cyril of Alexandria, and Gregory Nazianzus.
Lord's PrayerThe Lord's Prayer, often known by its incipit Our Father (Pater Noster), is a central Christian prayer which Jesus taught as the way to pray. Two versions of this prayer are recorded in the gospels: a longer form within the Sermon on the Mount in the Gospel of Matthew, and a shorter form in the Gospel of Luke when "one of his disciples said to him, 'Lord, teach us to pray, as John taught his disciples.
HymnA hymn is a type of song, and partially synonymous with devotional song, specifically written for the purpose of adoration or prayer, and typically addressed to a deity or deities, or to a prominent figure or personification. The word hymn derives from Greek ὕμνος (hymnos), which means "a song of praise". A writer of hymns is known as a hymnist. The singing or composition of hymns is called hymnody. Collections of hymns are known as hymnals or hymn books. Hymns may or may not include instrumental accompaniment.
Eastern OrthodoxyEastern Orthodoxy, otherwise known as Eastern Orthodox Christianity or Byzantine Christianity, is one of the three main branches of Chalcedonian Christianity, alongside Roman Catholicism and Protestantism. Like the Pentarchy of the first millennium, the mainstream (or "canonical") Eastern Orthodox Church is organised into autocephalous churches independent from each other. In the 21st century, the number of mainstream autocephalous churches is seventeen; there also exist autocephalous churches unrecognized by those mainstream ones.
