Last Friday I attended a beautiful ordination of 7 new Dominican priests. Here is a video showing parts of the ordination, the lovely music, and reflections by two of the newly ordained.
When I was a student at Catholic U and later at the Dominican's own Pontifical Faculty, I used to attend Vespers quite often with the friars. The friars sing beautifully in choir, and it was there that I came to know what vocal blending really is: a unity of voice that comes about through a real decision to sing as one.
At the end of Communion, the schola sang Biebl's Ave Maria, in the best rendition I have ever heard of that piece.