I am looking for gregorian chant CDs, from Brussels (?)  the web site  is: www.chantgregorien.com

 I found volume 5, 6, 7  they are L'anne liturgique en Chant Gregorian and these are of Pentecost time.  I did not know what I was buying.  All I knew is that my niece's husband is a now baptized catholic, a composer and writer who is dearly in love with the Gregorian Chant for the seasons of the Church.

His family are home without any Mass with their 6 daughters in Edinburgh.

When we mailed these 3 CDs, he went nuts!  The family would like very much to have the complete set, or get the rest to make the set.  I don't know how to get more.

I found these in our traditional churches religious store and I texted the nun who I would think would know how they got on their shelf.  I did not get a reply from the nun.

What I envision is maybe the nun bought the CDS, and made more and put the originals for sale in the religious store. Can anyone help me?  I tried Amazon.