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The '''''Octoechos''''' (also known as from Greek ''Paraklitiki'οκτοηχος''') is can refer either to the eight-[[tone]] (or mode) system of Church music or to the [[liturgical books|liturgical book ]] containing the weekly variable texts in each of the eight tones. It contains St. [[John of Damascus]] is credited with the variable material for the divine services related to systemization of the tone musical forms of the weekChurch.

{{stub}}In Greek usage, the ''Octoechos'' book is only the Resurrectional material for [[Sunday]] services which varies in the eight-week cycle, and thus is also called the '''''[[Anastasimatarion]]'''''. The Greek book for all seven days of the weekly material is the '''''Parakletiki'''''. In Slavic usage, the ''Octoechos'' (or ''Oktoich'') book includes the material for every day of the week, and thus is equivalent to the Greek ''Parakletiki''. The final form of the ''Parakletiki'' was significantly influenced by the 9th century St. [[Joseph the Hymnographer]]. ==See also==* [[Church Music]] ==External links==*[http://www.anastasis.org.uk/oktoich.htm Paraklitiki (Arch. Ephrem (Lash))]*[http://www.st-sergius.org/services/services2.html Sunday Octoechos (Traditional English)]*[http://web.archive.org/web/20070607205309/http://www.bright.net/~palamas/CyberPsaltiri/Contents.htm The Weekday Octoechos (St. Gregory Palamas Monastery) ]*[http://www.saintjonah.org/services/library.htm Practical Tips on How To Build a Liturgical Library]* [http://www.ourlifeinchrist.com/audio/mp3/tones_060306.mp3 The Eight Tones], a podcast from [http://www.ourlifeinchrist.com Our Life in Christ] from June 3, 2006