This is a particularly beautful rendition of a very beautiful Marian Hymn.
I have been hearing this quite a bit lately, as it is among the latest additions to the Blackfen choir's repertoire. They may need a little more time* to equal the choir on the recording, but are doing an excellent and very commendable job.
* At the rate they are progressing under Leutgeb's direction, I estimate about six months. (Now, I wonder if that compliment is enough to secure me a slice of bara brith next time some is made - and perhaps some very exclusive jam to go with it, if it hasn't all gone ;-))