I've been singing in two different choirs for the past 5 years or so - part of my prep is to find youtube videos of pieces we are performing to listen to over and over. I've stumbled across a number of beautiful sounding groups. I really have come to love the tone of this group - Voces8

Here's one of their newer releases:
https://www.youtube.com/watch?v=n8BwsZqTyr0

Share one of your own favorites?

Here's one we were supposed to sing this spring:
https://www.youtube.com/watch?v=49Og75MrkV8