Gregorian chant

What is Gregorian Chant?

https://www.youtube.com/watch?v=Igoh5kEqj3Y


第一首：
幼儿版
https://www.youtube.com/watch?v=ZVhyziOkvxw

Literal Translation Lord have mercy, Christ have mercy, Lord have mercy.

成人完全版
https://www.youtube.com/watch?v=O3ETFI2U9RA
完全文本
http://www.ccwatershed.org/media/pdfs/15/06/04/14-06-15_0.pdf

翻译版：
http://www.ccwatershed.org/media/pdfs/12/06/20/15-24-30_0.pdf