I saw this movie yesterday and I just don't know if I can put into words how amazing it is. I had no idea going in to it that it is a documentary and I especially had no idea how much I would end up crying while watching it.
I know that doesn't sound like a ringing endorsement, but it really is. If you have the opportunity to see this film, do it, it's such an awesome ride and the music is so varied it's fascinating to see the choir's interpretations.
Also, if you go and you don't cry, you can pretty much assume that you have no soul.