CANTUS is epic! A real Gregorian Monk Ensemble featuring the sounds of the dark Middle Ages, produced and released by Eduardo Tarilonte. I've just installed it, pressed a key on my keyboard, played few notes which you hear in this video and I've been blown away! Love it! I'm going to use on my next productions. Totally majestic!
Check CANTUS and all its amazing features together other awesome Eduardo Tarilonte's libraries at http://www.samplelibraries.com/