Hi, Jonathan, and thanks for the tip. We're chanting Vespers at the Church--and will use the pattern of another litany to sing it. It's a beautiful litany. Not sure about the requirement for approval to sing it in public.
In the past approval was needed to say prayers publicly, these prayers were usually found in Manuals such as this, https://archive.org/details/ManualOfPrayers1953/page/n3/mode/2up Of course most people have no idea of the two categories of prayers, Private and public.
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