Eastern Orthodoxy

==== Music and chanting ====

{{Expand section|date=February 2022}}
[[File:Patriarchate Constantinopolis.jpg|thumb|Chanters singing on the [[kliros]] at the [[Church of St. George, Istanbul|Church of St. George]], [[Patriarchate of Constantinople]]]]

For the composition of religious chant, the [[Octoechos]], an eight-[[Mode (music)|tone (mode)]] system, analogous to the [[Gregorian mode]]s in the West, and to other ancient Christian musical systems, is used. [[Byzantine music]] is [[Microtonal music|microtonal]].

Northern Slavs, however, have used simpler tonal systems evolved through the sundry local types of [[Znamenny chant]]; today [[Western culture#Music|Western music]], often with [[four-part harmony]], and the "tones" are simply sets of melodies.

There are numerous versions and styles that are traditional and acceptable and these vary a great deal between cultures.{{sfn|Ware|1993|p=238}}