Rachmaninoff All-Night Vigil Op 37

It's almost 100 years old now, certainly one of the greatest choral / religious musical masterpieces of all time. But that's if one knows it. Many have heard of it, few have taken the time to listen. Here it is. Enjoy! 

Serge Rachmaninoff - Vespers - All-Night Vigil Op 37 (1915)

This documentary must go with this post.