Irmologion
Irmologion
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Irmologion

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Irmologion

Irmologion (Ancient Greek: τὸ εἱρμολόγιον heirmologion) is a liturgical book of the Eastern Orthodox Church and those Eastern Catholic Churches which follow the Byzantine Rite. It contains irmoi (οἱ εἱρμοί) organised in sequences of odes (αἱ ᾠδαὶ, sg. ἡ ᾠδή) and such a sequence was called canon (ὁ κανών 'law'). These canons of nine, eight, four or three odes are supposed to be chanted during the morning service (Orthros). The book Irmologion derives from heirmos (ὁ εἱρμός) which means 'link'. The irmos is a melodic model which preceded the composition of the odes. According to the etymology, the book 'collects' (λογεύω logeuō) the irmoi.

An important portion of Matins and other services in the Orthodox Church is the canon, a long liturgical poem divided into nine strophes with a sophisticated meter called ode. Each ode and its prosodic meter is made according to a certain irmos, and concerning its celebration during Orthros it is followed by troparia called akrosticha. Sometimes certain longer irmoi are sung which are called katabasiai because of their descending melos.

The troparia sung with the canon are performed out of a textbook (Reader, Menaion) according to avtomela, but the irmoi and katabasiae are chanted by the choir according to the model of the irmoi. Since the Irmologion was invented as a chant book provided with musical notation, it only contained the smaller number of heirmoi with those texts which identified them. The other canons and akrosticha were usually collected in a separated text book, and the incipit of a certain heirmos or, in case of troparia the avtomela, indicated the melody which had to be applied for the recitation of the hymns.

Since the Byzantine period, there already developed a soloistic kalophonic way to perform just one certain ode during more important religious feast, if the celebration took more time than usual, but the genre became even more popular and innovative during the Ottoman period following the example of Balasios the Priest. The printed edition of the kalophonic irmologion (1835) is dominated by Ottoman era composers like Chrysaphes the Younger, Germanos of New Patras, Balasios, and later generations like Petros Bereketis and even later the hyphos school founded by Panagiotes Halacoğlu and his followers at the New Music School of the Patriarchate (Daniel the Protopsaltes, Petros Peloponnesios, Georgios of Crete).

The earliest sources with heirmoi were the tropologion (Georgian iadgari, Armenian šaraknot') which organised hymns of different genres with modal signatures according to the calendar, beginning with the Christmas and Theophany cycle. The book irmologion developed not earlier than during the 10th century (GR-AOml Ms. β.32 is probably the oldest fully notated irmologion).

Within the Irmologion, the new chant book of the Stoudites' reform, the irmoi are usually arranged according to the eight tones of Byzantine chant either according to the odes (order of the odes, OdO, divided into eight parts according to the echoi, but within each echos all odes are ordered beginning with all first odes of each canon, all second or third odes etc.) or according to the canon (canon order, KaO, divided into eight parts according to the echoi, but the odes within each echos are organised according to the canon of each irmos).

As example for the ode order (OdO), one might study the earlier irmologia of the Greek collection at the library of Saint Catherine's Monastery at the foot of Mount Sinai: the manuscripts 929 and 1258 are organised, that the first, second, third, etc. odes are together. Since the second ode is only sung during Lent, there were much less second odes than first or third odes.

As example for the canon order (KaO), one might study the very early fully notated manuscript of the Great Lavra on Mount Athos (GR-AOml Ms. β.32 written about 1000 with Chartres notation), the standard example for Coislin notation (F-Pn Ms. Coislin 220), or the later manuscripts of the Sinai collection (ET-MSsc Sin. gr.) such as Ms. 1256 and the first half of 1257. Here each ode has an ode number, such as ωδ α᾽ for the first ode, usually followed by a modal signature corresponding to the echos section.

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