A 6th century paschal hymn

This morning in church we sang two versions of the same hymn, Salve Festa Dies, by Venantius Fortunatus. These are "Hail Thee, Festival Day," sung to a rousing tune by Ralph Vaughan Williams, and "Welcome, Happy Morning." Unfortunately we did not sing those two wonderful hymns by St. John of Damascus, "The Day of Resurrection" and "Come, Ye Faithful, Raise the Strain," much beloved by Byzantine-rite Calvinists everywhere.