This English translation of Chourmouzios Chartophylax's revision of Chrysanthos' Introduction to the New Method of Greek chant notation has been made with the intention of providing students, scholars and musicians access to an easily digestible and widely accessible explanation of the rudimentary signs and theory of the chant notation used in the Greek and other Orthodox Churches. Written by two of the Three Teachers of the New Method, established in 1814, the Eisagoge is authoritative. Notes identify and underline the theoretical adjustments made by the 1888 Constantinople Music Committee. Despite the lack of great detail, this short work offers a thorough grounding for reference and comparison to subsequent publications.