A wonderful setting of Hildegard's chant. The composer is my favorite of the moment, Ola Gjeilo, and the singers are Sjaella. It's rather long at 4 minutes and 36 seconds, but nothing by Hildegard is short. Entrancing listening as I'm having a second cup of coffee from my Hildegard of Bingen mug (jealous, aren't you?).
Learn more about this Leipzig-based ensemble from their website at https://sjaella.de/start-en.html
Of course, those beautiful voices are matched with good looks and youthful spirit.
Blend, balance, amazing dynamic range - what more could you want with the work from Rachmaninoff's Vespers. Usually sung by much larger ensembles, this small group enables you to follow the lines easily.
Here's a fine large ensemble recording for contrast. If you were a Russian, you'd go for the large group. If you were an American early music type, you'd go for VOCES8.