Mass 9, Credo 2, psalm toned propers, except Ave Maria for Offertory. A few extra verses here and there for good measure.
The gabc file for the Ave Maria, since I couldn’t find it anywhere else: avemaria.gabc Sorry, I didn’t put in ictuses (icti?).
See The Earlier Post for examples of how to sing the Ave Maria as the Gregorian Chant Antiphon (Liber Usualis p 1679)