The detailed transcription of the thesis of the melos and its various methods within the medium of the New Method redefined the genres according to parameters like tempo, rhythm, and the melodic treatment of text (between syllabic and highly melismatic). Only later, since the end of the 19th century, treatises were published in Greek by Kosmas, Metropolit of Madytos (1897, vol. 1, pp. 42-69), and in Bulgarian by Peter Sarafov (1912, pp. 90-119). Both editions contained an introduction to teach systematically the formulas of each echos according to its troparic, heirmologic, sticheraric and papadic melos (usually a catalogue of the exposition and the different cadence formulas used in each melos).
