With all respect due the nuns, they don't make the call (unless they do indeed at your parish).<quoted text>
I was chatting with two nuns the other day and asked what they thought of the music in our liturgies. One of them was a specialist in liturgical music and was rather adamant that we won't be going back to traditional music or even chant and that the mix of contemporary music was here to stay. And she was quite certain that the Tridentine Mass was just a fad. Kinda wrecked my day...
I'm quite sure that these same nuns would have told you 40 years ago that "guitar masses" were here to stay.
Thanks be to the Almighty and Merciful that we're not subject to that cacophony any longer.