Schola / Choir
It is something the Holy Father, Pope Benedict XVI, has noticed himself. In his Letter to the Bishops accompanying the Motu Proprio, he says,
"it has clearly been demonstrated that young persons too have discovered this liturgical form, felt its attraction and found in it a form of encounter with the Mystery of the Most Holy Eucharist, particularly suited to them."
Why? In a word...
From what I gather from young people, they are looking for God and they know that God is Other, is mystery, is above and beyond our natural world. God created, saved and sanctifies this natural world; He is intimately part of it; He became human flesh Himself. But He is still Other; He is still the "mysterium tremendum," the overwhelming mystery. We experience God immanently, but as transcendent.
And so He is to be adored. Profoundly. Completely. Reverently. Serenely. And above all, through sacrifice.
I have a feeling that men have an affinity to worship that is theocentric, sober, contemplative. In early biblical history, it was the father of the family, and later the sons of Aaron, who stood before God as representatives of the people, to offer Him worship and sacrifice. And, in the end, it was the Son of God and Son of Mary who did the same in its perfection.