I listened to this 40 minute collection first, liked it, and took a listen to the 2 hour collection I posted a little while ago under Chants of the Knights Templar. Most of these chants are included in the longer mix except for the last one, Terra Tremuit.
Title: Songs Of The Templars (YT link) Uploaded by Andydrej_.
1. Da Pacem Dominum
3.Crucem Sanctam Subiit
4.Roman Catholic Chant – Crusades (Terra Tremuit)