The akathist "par excellence" is the one written during the seventh century for the feast of Annunciation of the Theotokos (25 March). This kontakion was traditionally attributed to Romanos the Melodist since kontakia of Romanos dominated the classical repertoire 80 kontakia sung during the cathedral rite of the Hagia Sophia, though recent scholarship rejects this authorship like in case of many other kontakia of the core repertoire. The exceptional case of the Akathist is that the Greek original consists of 24 oikoi, each one beginning with the next letter of the alphabet. Due to the excessive length the kontakion became truncated like the others, but even the earliest chant books with musical notation (the Tipografsky Ustav, for instance) have the complete text of all 24 oikoi written out, but the last 23 oikoi without musical notation.