On Life on the Rock, EWTN, Fr. Robert Fromageot, who teaches at Our Lady of Guadalupe, speaks about Gregorian chant. It is a very interesting interview, beginning at 17:00. He speaks about "learned perceptivity" and how the values and understanding we bring to chant influences our comprehension of its meaning.
Fr. patiently explains such terms as "introit" and "Asperges" - and he is wise to do so, but it is notable that he does so with the knowledge that most all of the Catholic viewers do not know these terms.
The seminary's rendition of the Da Pacem introit played here is very interesting and compelling.