canticles and the psalter, and usually Byzantine psalters have the 15 canticles in an appendix, but the simple psalmody itself was not notated before the 13th century, in dialogue or papadikai treatises preceding the book sticheraria. Later books, like the akolouthiai and some psaltika, also contain the elaborated psalmody, when a protopsaltes recited just one or two psalm verses. Between the recited psalms and canticles troparia were recited according to the same more or less elaborated psalmody. This context relates antiphonal chant genres including antiphona (kind of introits), trisagion and its substitutes, prokeimenon, allelouiarion, the later cherubikon and its substitutes, the koinonikon cycles as they were created during the 9th century. In most of the cases they were simply troparia and their repetitions or segments were given by the antiphonon, whether it was sung or not, its three sections of the psalmodic recitation were separated by the troparion. The recitation of the biblical odes The fashion in all cathedral rites of the Mediterranean was a new emphasis on the psalter. In older ceremonies before Christianity became the religion of empires, the recitation of the biblical odes (mainly taken from the Old Testament) was much more important. They did not disappear in certain cathedral rites such as the Milanese and the Constantinopolitan rite. Before long, however, a clericalizing tendency soon began to manifest itself in linguistic usage, particularly after the Council of Laodicea, whose fifteenth Canon permitted only the canonical psaltai, "chanters:", to sing at the services. The word choros came to refer to the special priestly function in the liturgy – just as, architecturally speaking, the choir became a reserved area near the sanctuary—and choros eventually became the equivalent of the word kleros (the pulpits of two or even five choirs). The nine canticles or odes according to the psalter were: (1) The Song of the sea (Exodus 15:1–19); (2) The Song of Moses (Deuteronomy 32:1–43); (3) – (6) The prayers of Hannah, Habakkuk, Isaiah, Jonah (1 Kings [1 Samuel] 2:1–10; Habakkuk 3:1–19; Isaiah 26:9–20; Jonah 2:3–10); (7) – (8) The Prayer of Azariah and Song of the Three Holy Children (Apoc. Daniel 3:26–56 and 3:57–88); (9) The Magnificat and the Benedictus (Luke 1:46–55 and 68–79). and in Constantinople they were combined in pairs against this canonical order: Ps. 17 with troparia Ἀλληλούϊα and Μνήσθητί μου, κύριε. (1) with troparion Tῷ κυρίῳ αἴσωμεν, ἐνδόξως γὰρ δεδόξασται. (2) with troparion Δόξα