The subdeacon chants the Epistle and the choir sings the Gradual. both are read by celebrant at the altar, according to the present law that he is also to recite whatever is sung by any one else. he blesses the incense, says the "munda cor meum" prayer, and reads the Gospel at the north sid. meanwhile the deacon prepares to sing the gospel, he goes in procession with the subdeacon, thurifer, and acolytes to a place on the north of the choir, and there chants it.