I've never studied Latin, but I have this understanding of its pronunciation:
- In classical Latin the "soft c" and the "soft g" do not exist.
- In modern Vatican Latin, words are pronounced the way they would be if the were standard modern Italian words spelled the same way. That means there is a "soft c" pronounced like "ch" in "potato chips" and a soft "g" pronounced like the "j" in "blue jeans".
The pronunciations in this rendition of the anthem of the European Union differ from both of those conventions. In the phrase "pacem mundi augeat", the "g" is "hard" and the "c" is a voiceless "s". Similarly in "Cives floreat Europa" the "c" is an "s". And in "stellae signa sunt in caelo" the "c" is an "s".
And some of the vowels seem rather odd.
Is there some standard system of pronunciation to which this conforms, or are they just pronouncing it wrong, or what?