https://www.youtube.com/watch?v=8_PF57tVk6w
and
https://www.youtube.com/watch?v=Cr1iudYIzmM
I looked for some Gregorian chant (which I know exists) for this great feast, but without success. As I remember it from my elementary school days, it is quite beautiful.
A blessed feast day to both of you!
Thanks for posting the Youtube links to those hymns.