File 12ab contains one of the two Introits and the Responsorial Psalm.
- 12a. Psalm 45 OR 9m. Psalm 93 (the latter same as Christmas, Mass at Dawn)
12b. Responsorial Psalm
11f. Alleluia (same as Holy Family, for use with the ad libitum Year B readings)
9p. Communion (same as Christmas, Mass at Dawn)