Sexagesima
Processional hymn: O God Of Loveliness, 930
Recessional hymn: Faith Of Our Fathers, 928
Kyriale: Mass XI, 740; Credo IV, 780
Marian Antiphon: Ave Regina Cœlorum, Solemn Chant
Communion Antiphon: Introibo Ad, Heinrich Isaac
The communion antiphon set by Heinrich Isaac is taken from Psalm 42(43):4, “And I will go in to the altar of God: to God who giveth joy to my youth.” In this short antiphon he ornaments the Gregorian melody and uses it as the musical foundation in the Soprano and Tenor voices. The schola sings the Gregorian antiphon first and between each iteration of the antiphon, verses from Psalm 42(43) are sung.
Heinrich Isaac (c.1450–1517) was a Renaissance composer from the South Netherlandish region. His output was rivaled only by Orlandus Lassus in number and variety of composition. Most notable of his collections is Choralis Constantinus which contains nearly 400 Gregorian chant based motets of propers for the Mass.