I'm just continually impressed by how much can be accomplished with so little. Maybe this perspective can be called "minimalist of highest quality."
instrumental prelude chanted propers with verses/GP in classic psalmody or fauxbourdon psalmody with modal harmonizations offertory proper, maybe in organum, maybe anthem/motet polyphony for feasts/solemnities priest chants his parts, totally reverential chanted Canon and Amen chanted propers with verses/GP in classic psalmody or fauxbourdon instrumental postlude
For instrumentals, organ of course, but also light winds, or bowed strings -- could be minimalist but creative here (recorder -- shepherds! -- for Advent, for example). Instrumentalists could support chant/choral pieces in various ways. Chants don't always have to be florid -- the Simplex antiphons are often quite reverent and beautiful. Opportunities for simple but effective minimalist polyphony (organum, etc) abound.
None of this requires a massive amount of work, but it does require a re-orientation of outlook toward chant and its system of values.
Pes. Another way to say it might be "with the most basic of ingredients almost anything can be turned into a feast." Last night I was just paging through the NOH, and wow, what a rich feast that is!
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