I was glad to see the Missa De Angelis on there. If you want a suggestion, I'd love to also see the Missa Beata Maria Virgine --- it's ghe one I learned 50 years ago as a 7th grader. I don't know much about the Gregorian chant, but there's a recording here from Solesmes, and the ones I'm thinking of are listed here as the Kyrie 9, Gloria 9 , Sanctus 9, and Agnus Dei 9.
http://www.youtube.com/watch?v=Ye-HAS7NUrE
The Credo we used to use with the BVM Mass was Credo IV, here:
http://www.youtube.com/watch?v=Yja0Tp_TCPA
Oh, this brings back so much.
If you know little, I know much less (and I thank you!), but I can usually still enjoy listening to chant even with my poor hearing. I liked both of those YouTubes you sent over. Which Missa Beata Maria Virgine do you like at this link? All, one, or none of them? I try to go by commentary as to quality, but it’s not always the best way to grab mp3s. http://www.amazon.com/Palestrina-Missa-De-Beata-Virgine/dp/B000QQOSIS/ref=tmm_other_meta_binding_title_0?ie=UTF8&qid=1388186951&sr=8-1 Thank you again!