This Sunday, February 9, is Septuagesima Sunday. From this Sunday until the Sacred Triduum we will sing Mass XVII for the chanted ordinary (Kyrie, Sanctus, Agnus Dei and Benedicamus Domino).
If you would like to become familiar with the chant by studying the notation or listening to it, “Corpus Christi Watershed” is an excellent resource. It has both the notation in pdf format and recordings of the chanted music available to listen to. Just scroll down to Mass XVII.
https://www.ccwatershed.org/kyriale/
