In exceptional cases, some of these canons were marked as prosomoia and written out with notation. In comparison, later heirmologia just notated the heirmoi with the text they were remembered (referred by an incipit), while the akrosticha composed over the model of the heirmos had been written in the text book menaion. Already the famous heirmologion of Paris, Ms. 220 of the fonds Coislin which gave the name to "Coislin notation" and written about 100 years later, seems to collect almost half the number of heirmoi. But within many heirmoi there are one or even two alternative versions (ἄλλος "another one") inserted directly after certain odes, not just with different neumes, but also with different texts. It seems that several former heirmoi of the same author or written for the same occasion had been summarised under one heirmos and some of the odes of the canon could be replaced by others. But the heirmoi for one and the same feast offered the option to singers to choose between different schools (the Sabaite represented by Andrew, Cosmas and John "the monk" and his nephew Stephen, the Constantinopolitan represented by Patriarch Germanos, and the one of Jerusalem by George of Nicomedia and Elias), different echoi, and even different heirmoi of the same author. Apart from this canonisation which can be observed in the process of redaction between the 12th and 14th centuries, one should also note that the table above compares two different redactions between the 11th and 12th centuries: the one of Constantinople and Athos (Chartres notation) and another one at the scriptoria of Jerusalem (especially the Patriarchate and the Monastery of Saint Sabbas) and Sinai within the Patriarchate of Alexandria written in Coislin notation. Within the medium of Middle Byzantine notation which combined signs stemming from both Old Byzantine notation systems, there was a later process of unification during the 14th century, which combined both redactions, a process which was preceded by the dominance of Coislin notation by the end of the 12th century, when the more complex Chartres notation came out of use, even at Constantinopolitan scriptoria. Sticherarion Kalophonia The synthesis between harmonikai and papadikai Ottoman era Chant between Raidestinos, Chrysaphes the Younger, Germanos of New Patras and Balasios Petros Bereketes and the school of the Phanariotes To a certain degree there may be found remnants of Byzantine or early (Greek-speaking, Orthodox Christian) near eastern music in the music