Dominican Little Office of Our Lady, Nonam - 3pm Gregorian Chant Prayer

Someone asked where to find the book, so I have made it available:
https://shop.jubil.us/product/officium-beatae-mariae-virginis-pro-cantu-editum/
(Does that count as a paid promotion?)
or download a PDF from my blog:
https://littleoffice.brandt.id.au/2022/03/04/dominican-little-office/