These Apolytikia (Troparia) are sung at the end of Lenten Vespers, Tone 5/Plagal First mode. "Rejoice, O Virgin . . . O Baptizer of Christ . . . ." This includes both Western and Byzantine notation. Updated 3/3/17.
These are the Katabasiae of the Canon for Odes 1-9 on Cheese Fare (Forgiveness) Sunday, Tone 6/Plagal Second Mode. (The same are used on the Sunday of the Pharisee and Publican.) "When Israel walked on foot . . ."