In a spoof post, The Tablet cites this as what we should play, sing, listen to and generally actively participate in.
Oh whoops, they are for real.
Meantime lots of people can sing this and have been for lots of centuries.
I'll go with the option 2 please.
After all the western staff system was invented to notate it, so it must be quite important.
Plus document after document after document from the church keeps telling us it should have pride of place.
My nuanced reading of that is that it should have pride of place.