If the abbot was to sing the twelfth Lesson, or to take part in a Responsory, or other portion of the service, as he did on the great festivals, the cantor had to come with the abbot's chaplain and others to his stall, bringing the necessary books with lights carried by servers, and the cantor in a low voice was to assist him in the singing. On feasts with twelve Lessons, whilst the _Te Deum_ was being chanted, preparations were made for the solemn singing of the portion of the Gospel selected for the Office of the day. The church servants brought into the choir a portable reading-desk, which they placed at the steps leading to the presbytery. Others brought a cope of the colour of the day, with an amice, stole, and maniple. Meanwhile the sacrist had fetched the book of the Gospels with some solemnity from the altar, and had placed it on the desk, where the cantor was waiting to find the proper place. Having done so, at the indicated verse in the _Te Deum_, the cantor went to the stall of the hebdomadarian of the Mass, and bowing to him conducted him to the desk, assisted him to vest, and pointed out to him the place in the Holy Gospels that had to be sung or read. Meanwhile the servers had come into the choir from the sacristy with incense and lights, and when the _Te Deum_ was concluded all turned towards the priest whilst he chanted the appointed Gospel, and finished Matins with the prayer of the day.
Immediately the bells began to ring for Lauds, and during the brief interval the priest unvested, and with the usual bow to each choir, which was slightly acknowledged by the monks on either side, he returned to his stall to wait till the cessation of the ringing gave the signal for the beginning of the next canonical Hour. Meantime the incense and lights had been taken back into the vestry, and the sacrist, having carried the Gospel-book back to the altar, the servants removed the desk out of the choir. The cantor busied himself during the interval at the great chained Antiphonary on the lectern, in order to see that all the places of Lauds were marked, and that the hanging lantern in front of the book was burning brightly enough to light up the great parchment page with its large square notes and big letters. In this interval the monks either remained sitting in their stalls with their hoods covering their heads, or they could take the opportunity of leaving the choir, to restore their circulation by a brisk turn in the cloister, or for any other purpose.