I would hate to prepare my schola with the propers if we can't use them.
If choirs will start to sing ordinary and propers over Missae Lectae some priests will conclude that they need not sing at all: the choir will do all the beautiful music anyway.
Low Mass has not gone away in the OF, not by a longshot. Many Sunday Masses are without music, or have the four-hymn sandwich plus a resp. psalm and a random Agnus Dei or some such. They are practically low masses with 2-3 pieces of bonus music. Some have a little more. Still, most all of our masses are not fully sung liturgies.
So lets not get too puffed up about low mass.
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