I just listened to that too. I have to say that I couldn't stop myself thinjing that this is some of the most interesting music I've ever heard. It was in the credo that I started to think that.
There is a great moment toward the end of Credo when all of a sudden everything gets very frantic. The moment where I went 'wow!' is in Gloria, that amazing upward bass surge on
deprecationem nostram. It was totally the moment of ecstatic truth for me (to quote Werner Herzog). The whole piece is extraordinary, the expressiveness of it, almost flamboyance when compared to lets say Dufay, who is stylistically the closest, is what completely took me back in the beginning. I've been listening to it a lot last couple of months.