What is liturgical music?

Liturgical music originated as a part of religious ceremony, and includes a number of traditions, both ancient and modern. Liturgical music is well known as a part of Catholic Mass, the Anglican Holy Communion service (or Eucharist) and Evensong, the Lutheran Divine Service, the Orthodox liturgy and other Christian services including the Divine Office. Such ceremonial music in the Judeo-Christian tradition can be traced back to both the Temple in Jerusalem and synagogue worship of the Hebrews.