Chrysanthos of Madytos (ca. 1770-1846), [[Gregory Protopsaltes the Byzantios|Gregory the Protopsaltes]], and [[Chourmouzios the Archivist]] (called the '''Three Teachers''') were responsible for a much-needed reform of the notation of Greek ecclesiastical music. Essentially, this work consisted of a simplification of the [[Byzantine ]] musical symbols which, by the early 19th century, had become so complex and technical that only highly skilled chanters were able to interpret them correctly. Despite its numerous shortcomings the work of the three reformers is a landmark in the history of Greek Church music, since it introduced the system of neo-Byzantine music upon which are based the present-day chants of the Greek Orthodox Church.

Generally, Byzantine notation is used in churches whose musical tradition is [[Byzantine chant]], those near (or by people who are from churches near) [[Church of Constantinople|Constantinople]], generally the [[Church of Greece|Greek Orthodox]], the [[Church of Constantinople]], the [[Church of Alexandria]], the [[Church of Antioch|Antiochian Orthodox]], and the [[Church of Romania|Romanian Orthodox Church]]. The [[Church of Serbia|Serbian Orthodox]] use a slightly different system of music; the [[Church of Russia|Russian Orthodox]] use what is essentially Western notation and music. In recent times, several churches in America have also begun using Byzantine notation now that such music is available in English online from [[St. Anthony's Greek Orthodox Monastery (Florence, Arizona)]] and [[St. Gregory Palamas Monastery (Hayesville, Ohio)]]. Also, it is worth mentioning that some [[Uniates|Eastern Rite Catholics]] use Byzantine notation.

*[http://music.stanthonysmonastery.org/music/Links.htm Up-to-date List of Byzantine Music Links]

*[http://wwwmusic.stanthonysmonastery.org/music/ByzMusicFonts.html Byzantine Music Notation] from [[St. Anthony's Greek Orthodox Monastery (Florence, Arizona)|St. Anthony's Greek Orthodox Monastery]]

*[http://sgpmwww.goarchagesinitiatives.orgcom/dcs/ematinspublic/main.htm eMatinsdcs Digital Chant Stand] from [[Sthttp://www.agesinitiatives. Gregory Palamas Monastery org AGES Initiatives (HayesvilleCharlotte, OhioNC)|St. Gregory Palamas Monastery]]