to decipher since the first page was exposed to all kinds of abrasion, but it is obvious that this book is a collection of short kontakia organised according to the new menaion cycle like a sticherarion, beginning with 1 September and the feast of Symeon the Stylite. It has no notation, instead the date is indicated and the genre κονδάκιον is followed by the dedicated Saint and the incipit of the model kontakion (not even with an indication of its echos by a modal signature in this case). Folio 2 verso shows a kontakion ἐν ἱερεῦσιν εὐσεβῶς διαπρέψας which was composed over the prooimion used for the kontakion for cross exaltation ὁ ὑψωθεῖς ἐν τῷ σταυρῷ. The prooimion is followed by three stanzas called oikoi, but they all share with the prooimion the same refrain called "ephymnion" (ἐφύμνιον) ταὶς σαῖς πρεσβεῖαις which concludes each oikos. But the model for these oikoi was not taken from the same kontakion, but from the other kontakion for Theophany whose first oikos had the incipit τῇ γαλιλαίᾳ τῶν ἐθνῶν. The Slavic reception The Slavic reception is crucial for the understanding, how the kontakion has changed under the influence of the Stoudites. During the 9th and 10th centuries new Empires established in the North which were dominated by Slavic populations - Great Moravia and the Kievan Rus' (a federation of East Slavic tribes ruled by Varangians between the Black Sea and Scandinavia). The Byzantines had plans to participate actively in the Christianization of those new Slavic powers, but those intentions failed. The well established and recently Christianized (864) Bulgarian Empire created two new literary centres at Preslav and Ohrid. These empires requested a state religion, legal codexes, the translation of canonic scriptures, but also the translation of an overregional liturgy as it was created by the Stoudios Monastery, Mar Saba and Saint Catherine's Monastery. The Slavic reception confirmed this new trend, but also showed a detailed interest for the cathedral rite of the Hagia Sophia and the pre-Stoudite organisation of the tropologion. Thus, these manuscripts are not only the earliest literary evidence of Slavonic languages which offer a transcription of the local variants of Slavonic languages, but also the earliest sources of the Constantinopolitan cathedral rite with musical notation, although transcribed into a notation of its own, just based on one tone system and on the contemporary layer of 11th-century notation, the roughly diastematic Old