While all the Gregorian Chant, versicles and responses by the congregation are in Latin, the Collect and the three readings are in English. The Gospel is followed by a homily based on the writings of the Fathers of the Church.
Whereas before, the Canon was recited in English, now with the Motu Proprio of Pope Benedict, the congregation participate in singing all those parts that His Holiness wants recited or sung, in Latin.
During the Communion of the faithful, the Sacred Host is received kneeling down on the Communion rail, and on the tongue, while the monastic choir sings sacred Renaissance songs of Palestrina, Vittoria, Gabrielli, DiLassus, Tallis, Dufay, etc.
The Post Communion prayer is in English, but the rest, up to the Dismissal, is sung in Latin with the congregation responding. After Mass, the prayer to St. Michael is recited, followed by a seasonal hymn to the Blessed Virgin sung by all as the exit hymn. Then the Thanksgiving Prayer after Mass is entoned and joined in by the congregation, followed by the Our Father, Hail Mary and Glory Be, all recited in Latin so to enable the congregation to memorize them as the Holy Father has encouraged the faithful to do so from the first year of His Pontificate.