I bet they will, and I especially hope there’s a touch of Latin, at least. In any case, if the Pope’s personal representative if flying over to check it out first, I doubt that the music is going to be the St. Louise Jesuits. (Ooops, Freudian slip...I think I’ll just let it stand though, becuase it’s a pretty good one!)
One of the blogs mentioned that the Gloria and Sanctus of the Mass in Yankee Stadium will be from one of Tomas Luis de Victoria’s Masses.