In 2021, the second Tuesday in Advent is also the feast day of Saint Ambrose of Milan (7 December), and to him is attributed the hymn Veni redemptor gentium.
Latin and English Translations at Hymns and Carols of Christmas
Recording of “Come Thou Redeemer of the Earth” by the Benedictines of Mary, Queen of the Apostles
Nihil sub sole novum 