Ah. That's probably why I can't find it. I didn't remember the Spanish part. Thanks!
Postings on this forum represent the views of the individual participants and not necessarily those of the Church Music Association of America. (Some participants are not even members.)
CCWatershed has an extensive collection of organ harmonizations of the Kyriale and other chants. I went through some volumes and collected a few different settings of Mass XVIII.
Though they're meant as organ accompaniments for unison chant-singing, they can also be used as choral settings — they're all written strictly for four voices. I've programmed Mass VIII (de Angelis) from these collections, and while it's a little tricky at first to line up all the syllables, it's definitely doable and effective.
To participate in the discussions on Catholic church music, sign in or register as a forum member, The forum is a project of the Church Music Association of America.