I've been looking for the most appropriate mass setting for Pentecost, and it seems that Mass II in the Kyriale, the Missa Fons Bonitatis, is a really felicitous choice. It's already a favorite of our schola because of the lovely cascading melismas in the Kyrie, but, thanks to an explanation by the incomparable Giovanni of Milan on YouTube, I realized the original tropes, while they refer to each of the members of the Trinity, refer esp. to the Holy Spirit in the three tropes of the final Kyrie:
Kyrie, Spiritus alme, cohærens Patri Natoque, unius usiæ consistendo flans ab utroque: eleison Kyrie, qui baptizato in Jordanis unda Christo, effulgens specie columbina apparuisti: eleison Kyrie, ignis divine, pectora nostra succende, ut digni(e) pariter te laudare (proclamare) possimus semper: eleison
Here's Giovanni singing the Kyrie Fons Bonitatis: (I really like his use of the recorder to play the melody--my husband also likes to use the recorder to teach the different parts to our choir.)
I've never heard the Kyrie sung in Latin with tropes before. Does anyone still do that? I think it's an option in the Ordinary Form but even that is rare.
IMO a troped Kyrie such as Fons Bonitatis shouldn't be used at the Ordinary Form of the Roman Rite either. It's true that the third form of the Pentitential Act allows for other invocations, but these always have the following form:
V. [first invocation], Kyrie eleison. R. Kyrie eleison. V. [second invocation], Christe eleison. R. Christe eleison. V. [third and last invocation], Kyrie eleison. R. Kyrie eleison.
Thanks so much for the clarification! From what little I remember of having heard this once or twice at the OF Mass a long time ago, the celebrant seemed to have been composing the invocations off the top of his head and giving them his own ideological slant which wasn't the most comforting experience in the world.
Maybe it's just as well that this option didn't catch on (although the original Latin tropes are beautiful.)
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