John Kladas

John Kladas (Greek: Ιωάννης Κλαδάς) was a Byzantine hymnographer who lived in the late 14th and early 15th centuries. He had the post of lampadarius in the cathedral of Hagia Sophia of Constantinople. He is considered the third most important Byzantine hymnographer after John of Damascus and John Kukuzelis. He wrote several works on the theory of music, the most important being the Grammatike tes mousikes (The Grammar of Music).

His daughter was a chanter and hymnographer, known only from one composition.

Sources

• Manuel Chrysaphes (1985) The treatise of Manuel Chrysaphes, the lampadarios: On the theory of the art of chanting and on certain erroneous views that some hold about it (Mount Athos, Iviron Monastery MS 1120, July 1458), in Monumenta musicae byzantinae, vol. 2, pp. 45, 79, 83 (snippets available)
• Apostolike Diakonia tes Ekklesias tes Hellados, Digitalization of Byzantine Music, Archive of Konstantinos Priggos. In Greek.