Sancte is the latin word meaning "Holy" "Blessed" "Saint"
Sacre is the Latin word mean "Other" "Set Apart"
so that the word sancrosanct means Set apart and Holy.
Therefore "sacred music" more than sets sacred texts, it should have a quality that set it apart from the common or from the "Folk"
This is the best reason to argue why "FOLK MUSIC" should not be part of the SACRED AND HOLY MASS.