Roman style
http://www.youtube.com/watch?v=m08zpdf5ugc
The Canticle of St Symeon as set by Sergei Rakhmaninov for his “Vespers”, opus 37
Russian plain chant
http://www.youtube.com/watch?v=vJ9mAr56cPA
Hey you chior directors… pay attention. This is what real church music is supposed to sound like.