Yes, Virginia, one of these Masses is the Ordinary Form of the one Latin Rite of the Catholic Church and one of these Masses is the Extraordinary Form of the one Latin Rite of the Catholic Church. Can you tell the difference from the photos?
Yesterday, December 5th was the 50th Anniversary of Sacrosanctum Concilium. Nothing, as far as I can tell, was mentioned about it by the Pope or the Vatican.
When I was in Rome two major scholars of the liturgy stated that this document was a rush job to get it to the press of the time. 2000 bishops of the world had met for almost a year and none of the various committees charged with coming up with actual documents for the bishops to vote upon had completed their work. None were anywhere near completing their work including the Liturgy portion of Vatican II.
But pressure was placed upon the liturgy group to get the document out, voted upon and to the press so that it would look like the 2000 bishops had accomplished something that first year. So Sacrosanctum Concilium was rushed through, voted upon and the first document of Vatican II to be released. If you read it compared to the other documents of Vatican II you can tell it was a rushed job and in some places ambiguous and sloppy. We have had to live with this for the past 50 years, but only now are scholars realizing what a rushed job it was, not to mention the group appointed by Pope Paul VI who rushed their reforms out as quickly and sloppily as possible. Thus in the last 50 years we have seen the disintegration of the Liturgy, not so much in terms of the actual books (poor vernacular translations not included, but these were rushed also based upon a faulty directive on how to translate from the Latin to the Vernacular).
People born after 1959 often think of Vatican II as some sort of historic event back there with Adam and Eve. They don't have the same idol worship of it as people who remember the Council, the so-called excitement (run away hormones) that so many had and the awful experimentation and deconstruction of the liturgy, the Church and her doctrinal and moral teachings by those on a "manic-high" during this period. In fact, many people born after 1959 are ambivalent about the Church because of the silliness and mania born in the immediate aftermath of Vatican II.
The Church which had been a rock for the promotion of salvation in Jesus Christ soon became a marshmallow that bounced not a few right out of the doors of the Church, many running from the mania and iconoclasm of the period to other things for their salvation, like a gross individualism and being independently "spiritual" in their own way.
Nonetheless, though sloppily written and hastily developed, Sacrosanctum Concilium remains a document of the highest Magisterium of the Church so it cannot be disregarded. But it can be reinterpreted in light of what is known about how it came together and the disastrous implementation of its somewhat conservative agenda although radical in other ways.
The papist I am tells me to look at how the Pope celebrates the Mass and the Liturgy of the Hours in the Vatican for the proper implementation of Vatican II moving forward:
1. The priest and congregation should celebrate as seriously as the Holy Father does, keeping his personality out of it and being somber and soft in following the rubrics.
2. Pope Francis normally, but not always, celebrates his parts in the vernacular (Italian) but the Kyrie, Gloria, Credo, Sanctus, Pater Noster and Agnus Dei are in Latin. I think this is a marvelous way to preserve our Latin heritage but we all know that it is permissible to celebrate the entire Mass in Latin if one chose to do so.
3. Chant the propers of the Mass, while not excluding an additional Entrance Chant and Communion antiphons or motets. This is the way it is done in Rome.
4. Decorate the altar in the pre-Vatican II way or celebrate it ad orientem. Pope Francis has done ad orientem and maintained the altar style of Pope Benedict.
If we modeled the way Pope Francis celebrates Mass and pay stricter attention to singing the Mass rather than singing songs at Mass, I think we would begin to see a great improvement in the Liturgy with solemnity and reverence in the pre-Vatican II sense of the word returning to our people when they come to Mass.
Finally, a hope for the future of the Mass comes from the Anglican Ordinariate. The options of the Prayers at the Foot of the Altar, the traditional offertory Prayers, the EF rubrics for the Roman Canon and the Last Gospel after the dismissal will show the great continuity between the post-Vatican II Mass (Ordinary Form) and the Mass from which it developed, the pre-Vatican II Mass now called the Extraordinary Form. There will be an authentic organic development rather than a breach to something altogether different.