Extensive study of Syriac hymnody would show whether there is any relationship between it and Byzantine hymnody, which hypothesis has had as many opponents as defenders; but this study is an undertaking fraught with difficulties, owing to the small number of documents published in satisfactory condition. Indeed, the knowledge of hymns supplied by editions of the liturgical books of Catholic Chaldeans, Syrians, or Maronites is inadequate for the reasons indicated above. The works of St. Ephraem, which contain a large number of them (authentic or apocryphal), have not been critically edited. The Nestorian Breviaries, which have most faithfully preserved the ancient texts, have never been printed and manuscripts are rare, while the collections of hymns apart from liturgical books are few and have not been sufficiently studied.
