sentences:  A Syriac translation of the "Octoechos of Antioch", tropologion created by Severus of Antioch, Paul of Edessa and John Psaltes (early sixth century), was copied in 675, but still during the 9th century Tropligins were organised in a similar way like the Georgian Iadgari.The Syriac Orthodox Church today still makes use of a system of eight modes (usually classified as "makam").Each hymn (Syriac