Agnus Dei X - Bitter Suite by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 license. https://creativecommons.org/licenses/by/4.0/
Source: http://www.amazon.com/Agnus-Dei-X/dp/B00QGC7W3Y
Artist: http://incompetech.com/
...
https://www.youtube.com/watch?v=DdKfz5sWHB0