All the Masses that I personally wrote for the Vatican II Hymnal can be sung A Cappella.

However, the St. Anne Line Mass was specifically written to be a "ferial" Mass.

. . . that is, an easy Mass setting you can use on days when there is no organist.

A Cappella practice videos ["Lord, Have Mercy," "Glory To God," "Holy, Holy, Holy," "Mystery Of Faith," and "Lamb Of God"] for the St. Anne Line Mass have been posted HERE.

SAMPLE: St. Anne Line Gloria YouTube