What is the Tridentine Mass?

Put simply, the Tridentine Mass is the Latin Mass that was being said in every Catholic Church of the Roman Rite before Vatican II (1962-65). It is the Mass that has nourished the piety of countless saints throughout the ages. It was “canonized” or set in stone by Pope St. Pius V in 1571, but is not essentially different from the oldest recorded liturgies that history has left us.