I have discovered a very great find: the Gregorian Chant for the Nov. 2 Requiem Mass. It has all of the Propers (including the Epistle and Gospel), the Kyrie, Sanctus, Pater Noster, and Sanctus; one small peculiarity for those knowing the Gradual: the monks repeat the "Requiem aeternam" after the Psalm verse. Here is the link (you can pick one of various formats; you pay by credit card or Paypal):
http://www.pristineclassical.com/LargeWorks/Vocal/PACO006.phpThere is another one from the same monks of Beuron Abbey, the Vespers of Christmas Eve:
http://www.pristineclassical.com/LargeWorks/Vocal/PACO014.php