==See also==
* [[osource:The_Eight_Tones|OrthodoxSource - The Eight Tones]], offering an instructive example of the eight tone system.
* [[Church Music]]
* [[osource:The_Eight_Tones|OrthodoxSource:The Eight Tones]], offering an instructive example of the eight tone system in the Russian tradition.
==External linklinks==
*[http://www.anastasis.org.uk/oktoich.htm Paraklitiki (Arch. Ephrem (Lash))]
*[http://www.st-sergius.org/services/services2.html Sunday Octoechos (Traditional English)]