What exactly is meant by the term “Modern Christian Liturgy”? At one level it could mean any recent worship service in any church, for example, the Divine Liturgy of the Ethiopian-Eritrean Orthodox churches celebrated last week. Although a modern celebration, with adaptations made to the rite amongst the diaspora, the rite itself was formulated in the late medieval era and has much older roots in Egypt. Sometimes the term applies to the most recent official liturgical services of a particular main line denomination growing out of the Liturgical Movement, such as the post-Vatican II Roman Catholic rites compared to the so-called “Tridentine” rite represented by the missal of John XXIII, or the Church of England’s Common Worship 2000 rites compared to those of the 1662 Book of Common Prayer. Here, the term is reserved for those newer forms of service that have appeared officially or unofficially in contemporary Euro-Atlantic protestant, evangelical, and charismatic churches in the 20th century, frequently adopting the current fashions of popular music for worship songs, and incorporating modern technology.